I am not responsible if your devices send you back in time, explodes, implodes, bricks or flies into space from the use of any software I put up.


Monday, November 30, 2009

K10STAT AMD Griffin Processor UnderVolting Guide


Why UnderVolt?

Because when a lower voltage can sustain your clockspeed, a stress tested undervolt will preserve battery life and reduce heat generated without affecting your CPU performance at all !!

Zero performance handicap with less heat output and longer battery life!! (Your yield may vary)

If it is so great why manufacturers don't undervolt?

Because they manufacture processors in bulk you can't expect them to test and undervolt every single processor to the best of its capabilities!

So they simply take the a slightly higher approximate stable voltage out of the whole batch and burn the same value into every chip of the same family!

Will it spoil my processor?

No it won't, because it doesn't involve making it hotter.
In non-biological system usually heat destroys and cold preserves.
During testing, BSOD (Blue Screen of Death) is common but after a restart the Processor Voltage should restore to original value.
After finalizing the stable voltages, then you set the program to run undervolted values every startup.
I strongly recommend stress testing ALL THE P-STATES before setting up the final values so your computer will not crash when you are doing your important work (or in the middle of gaming).

Why don't you use Windows Startup to run it?

Microsoft seems to be encouraging running start-ups through Task Scheduler, not to mention Task Scheduler allows good control over program automated execution.

Which Processor is it for ?

Basically AMD K10 Series Processors.

But I am using Intel Processors?

For Core 2 Duo Processor you can use RMClock, if you are using 64bit Operating System you might need to google for 64bit libraries to replace some of the 32bit libraries. You can google it up.
For Core i3/5/7 users, I haven’t heard of any undervolting tool but I personally seen in the BIOS/EFI ACPI P-State Control is Unlockable, so BIOS/EFI modding is a possible solution.

But I am using AMD TL Series and below Processors ?
Use RMClock as well refer to “But I am using Intel Processors”.
Older AMD Processors should be supported by RMClock.

Getting Started

Firstly download K10STAT from here (I didn't make this program).
I Extracted it to C:\Program Files\K10STAT (K10STAT is 64bit and 32bit capable as well)
Configure K10STAT

When you run K10STAT you should see the menu above.
You can set a maximum of 5 Profiles.

FID: The multiplier for the Processor
(FID doesn't work in AMD Multiplier Locked Processors)

DID: The P-State of the Processor
Note all Processors supported by K10STAT uses K10 Power Design


That is what we are interested in.
To set the voltage for P0 simply select P0 and select the corresponding voltage and apply.
Remember: Min 0.75 V Max 1.2 V!
Caspian CPUs maybe able to run lower than 0.75V
For me -0.05V is the Max Stable voltage for P0 state any lower it BSOD!


This is the amount of CPU usage load before the processor changes P-State from high (eg.P3) to low (eg.P2)  to meet the minimum load requirements.
Currently it is set at 60% meaning it will switch from P2 to P1 when processor detect 60% CPU load and the same applies from switching from P1 to P0.


It is basically the opposite of Up %
This is the amount of CPU usage load before the processor decrease P-State to meet the minimum load requirements.

Up (milliseconds):

It is the time delay the processor takes to switch from one P-State to the next higher performance P-State.

Down (milliseconds):

It is basically the opposite of Up.
It is the time the processor takes to switch from one P-State to the next lower performance P-State.

After you have set suitable values (-0.05 recommended on first try).

Use Windows Processor Power Management to test different levels.

Use 4 Windows as shown above, to monitor all the P-States so it is more convenient to access the values and monitor the states.

First remember to enable K10STAT Clock Control

To test simply click on the Core of the P-State immediately the Processor will assume the P-State.

Test each P-State by running Intel Burn In (Google and Download) or any suitable CPU loading tool.

For me the voltage values that passed Intel Burn In test are 1.075V, 0.850V and 0.750V.

At 1.025V, it BSOD after 2 mins.
At 1.0372V-1.050V it produced the wrong result.

Test all P-States you have modified so it won’t crash whenever the CPU switches to any of them.

To pass LinPack, the result calculated by the CPU must be consistent.
After you have affirmed the stable voltage values then you may proceed to set it to start automatically.

Setting K10STAT for StartUp

Open Task Scheduler by accessing Start Menu\All Programs\Accessories\System Tools\Task Scheduler

Create a Task

Alternatively you can make it run as a SYSTEM task (as shown below)

If you want the K10STAT icon to appear in the systray run the program under your user account.
If you run it as SYSTEM account the program will run too(in the background) but it will not be visible in the systray.
Click "Change User or Group" then Enter "System" then choose "Check Names" then select OK.

or you can create it as a startup process as shown below. (RECOMMENDED because it will run before a logon is required)

**Please note a file called K10stat.dat containing the undervolt settings will be created in the C:\Windows\System32 folder because it is the default path for admin rights unless you changed the "Start In (Optional)" parameters, the setting just under the "Add Arguments (Optional)" parameters as shown below.

The program will load the settings from K10STAT.dat so make sure all the changes are written to the file.
When you launch K10STAT manually a new K10STAT.dat will be created in C:\Program Files\K10STAT which Task Scheduler WILL NOT LOAD.
It will only load the K10STAT.dat in C:\Windows\System32 unless you change the "Start In" parameters to "C:\Program Files\K10STAT".

If you do not specify “Start In” parameters, the file “K10stat.dat” will be created in C:\Windows\System32 (Default Administrator Path) as shown below.

The following arguments are available (Source: http://dsus4.blog126.fc2.com/blog-entry-3.html)

Command Line Option
-lp:#(1-5) - load profile#(1-5) and write to MSR.

-nw - Start K10stat with No Window.

-ClkCtrl:#(0-4) - Enable Clock Control by K10stat.
0: No Control
1: Control clock of each core.
2: Control clock of all cores together (Criterion is most loaded core).
3: Control clock of all cores together (Criterion is average of all cores).
4: Control clock of all cores together (Criterion is least loaded core).
If you set -ClkCtrl:2 you get slightly better performance at the expense of more power consumption because the processor increases P-States together rather than independently.

Because Windows proceed on the assumption that cores are unganged by default on the RM/ZM Series processor.
Whether it is ganged by default is dependent on the hardware design.

AMD K10 Processors were designed originally to use unganged mode to conserve power.

-StayOnTray - use this option with -nw for Clock Control Mode.(Note after a sleep if the CPU MSR registers are resetted, voltages will revert to default, hence you need -StayOnTray to ensure it is always running in the background)
"C:\Program Files\K10stat\K10STAT.exe" -lp:1 -ClkCtrl:2 -StayOnTray -nw

Finally you can Control your CPU using the K10STAT Systray if you enabled -StayOnTray manually as well.

-ClkCtrl:#(0-4) - Enable Clock Control by K10stat (Refer to above).
0:No Control

1:Control clock of each core.
UnGanged means each CPU Core #0 & #1 operates independently of each other so at any one time their frequency and DID could be different.(This is the original intent of the design of the Turion Chips as they are given different power planes.)

2:Control clock of all cores together (Criterion is most loaded core).
This means the CPU will raise/drop the DID of Core #0 & #1 together when it detects the one of higher Core has reached the criteria for a Frequency boost or Throttle Down.

3:Control clock of all cores together (Criterion is average of all cores).
This means the CPU will raise/drop the DID of Core #0 & #1 together when it detects the average of both core has reached the criteria for a Frequency boost or Throttle Down.

4:Control clock of all cores together (Criterion is least loaded core).
This means the CPU will raise/drop the DID of Core #0 & #1 together when it detects the one of lowest Core has reached the criteria for a Frequency boost or Throttle Down.

A new function called Lock-P-state is available in new versions of K10Stat.

It is another way you can lock the P-state for P-state testing again you should enable Clock Control before performing the P-State Testing.

Down Core refers to switching off 1 of the Cores either Core0 or Core1.



Original Factory Default Settings

UnderVolted 1.075V
In Unganged Mode

UnderVolted 1.075V
In Ganged Mode (Based on highest core)

Thats All !

AMD Technical Documentation Regarding Turion Processors here

(Contains Temperature Limits P-States and Voltages)


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AJ said...

I have a ZM-82 (Turion Ultra) processor? Would this software be applicable? If so, what do you think are the safest and effective values for undervolting my CPU?

What are the disadvantages of undervolting?

Is there a dramatic change in battery power consumption when a CPU is undervolted?

Weinter said...

As I had written try a value of -0.05V for each power state.
ZM-82 has 3 power state like my RM-72

Disadvantage in the sense you have to do stability testing for each Power State other than that No disadvantage.

Depends on how much you undervolted.
For me I get around 30min extra on light usage.

ZM-82 default value is 1.10V 0.95V and 0.80V.You can try 1.05,0.90,0.75 and experiment from there.

AJ said...

Have you experienced a noticeable change in battery standby time?

Weinter said...

You mean idle, yes.
Suspend is the same timing though.

AJ said...

Ok, I'll try maybe tonight. I hope it will just be alright (I'm using Windows 7 RC 64-bit). Just tell you later if it is successful. Thanks!

AJ said...

Unfortunately, for the 1.075-0.90-0.75 from 1.125-0.95-.80, for the first time I ran the Intel Burn Test, it was successful but then when I ran it again it said it was unsuccessful. So I've returned it to its orignal values since it saved the custom values even though I've closed the unvolting program.

Weinter said...

OK, try 1.10-0.95-0.80
The reason it failed is because the original full clock for the voltage is 1.125.
Mine is 1.075 I UVed to 1.050.
AMD is pushing the limits so the undervolt parameter is very limited at P-State 0.
Try 1.100V instead.
The setting will revert when you reboot unless you schedule it to start up.

Weinter said...

If -0.050 is too much try -0.025

l e c a r o said...

No work for me in windows 7... RC 7100 64bit
I have this laptop HP Dv7 1110eg. Turion X2 RM-72
crash at startup
the same problem that with this tool "http://amd.exchange.de"

l e c a r o said...

sorry... the correct url is http://amd.goexchange.de

I like K10STAT
but ... the possibility that my son does overclock the pc i see it is so easy that it scares me


l e c a r o said...

I do not know if it is a bug or is it a problem of my computer

I think not, because in Vista 64bit ... http://amd.goexchange.de worked well, it all started with Windows 7 RC 7100 64bit

I discovered this.
With both tools i can not restart, then the PC hangs at startup.

To restart, I turn off the PC and turn on by the power button

In this way both tools work well


l e c a r o said...

Please, someone say something

Why the blue squares in K10STAT, sometimes become orange, i click and i see that the voltage is at 1.20v

I have not programmed this voltage on my p-state

I don't understand well which is the operation the Clock Control and Ganged (Control Function)


Weinter said...

It is normal even without K10STAT the processor will sometimes switch to 1.2V for short periods.
Reason is however unknown.

Jr. said...

i could set to 1.0125, 0.8750, 0,750 w/o bsods. the originals were 1.1250, 0,950, and 0,800.

that`s -0,1125, -0,075 and -0,05!

i ran intelburn and orthos at the same time for sometime and no problems found. thats great!

my rm-72 can pass 100C when at full load and i`ve noticed that when the temp gets 100C the freq is cut by half in order to decrease the temps.

so if you are playing and your arent running k10stat you`ll will have the half of power... that sucks!
but now, i could get around 95C at full load running at full speed!

Weinter said...

You can reproduce the 1.2V issue by following:
Use the CPU as without any undervolting utility.
Use CPUZ to monitor the jumps sometimes it will hit 1.2V

Weinter said...

Jr I believe the original voltage of RM-72 is 1.1V not 1.1250.
Anyway you are lucky to get a chip with high undervolting margin.

Weinter said...

Sorry Ignore that comment above it is 1.1125V. You are right.

Weinter said...

l e c a r o check the AMD Documentation.
The 1.2V is one of the P-State you cannot change.

l e c a r o said...

Thx u Weinter... good news...
please send me the url... please


Weinter said...

I linked the AMD Documentation to the end of this blog entry.

Weinter said...

Check pg 22 of the PDF.
There is a P-State called S0.C0.HTC
and it is 1.2V

l e c a r o said...

Thanks Weinter

I have this question ...
In my processor, only want to make Undervolting
instead of using "-lp:1 -ClkCtrl: 2 -StayOnTray -nw"

I could only use "-lp:1"

implement it in this way, but the K10 is not running ... I see that the change in voltage ...

but K10 is not in the running processes

Someone says something please

l e c a r o said...

Should always be running? right?

Weinter said...

What will happen is the voltage will be set when the Task Scheduler runs it when you boot up.
However after a suspend resume when the CPU registers are reseted the voltage will be reseted too.

l e c a r o said...

ok ... then ... This is the configuration that you advise me?

"-lp:1 -ClkCtrl:2 -StayOnTray -nw"

Weinter said...

If you are really overheating you can try -ClkCtl:1
This will set this to unganged mode meaning each core will throttle as required by measuring the load separately on each core there will be no "excess" throttling.
I have updated the explaination in the guide.

l e c a r o said...

Weinter thank you very much ...

Originally how it works Turion?
default is that how this works,
without K10?

sorry for my english

Weinter said...

Originally it was supposed to be unganged since they were designed with separate powerplanes

l e c a r o said...

So, that using -ClkCtrl:0
PC works as default, only be done
Undervolt, right?

thank you

Weinter said...

Yes the only difference is the undervolted values you set.

madriddistas said...

Hye there, I did everything you say and things go exactly as it meant to be until I reboot my laptop just to test whether the k10stat works or not. Somehow, the laptop hang just before it enters windows.

It's not the same case if totally shutdown the comp. The laptop works fine if i turned off and on again.

Why is that so? Have you tried it before?

My settings is 1.0250, 0.8,0.75
(I tried to juice up a bit but only stock value can make a perfect reboot)

Weinter said...

First off you CANNOT TAKE MY VALUE as absolute.
Although same model, during production different chip have different potential due to impurities and artifacts.
Test it before setting it to start up

Weinter said...

You should as check msconfig for other startups.
You should note that K10STAT loads winring0 library which takes a while to start up.

madriddistas said...

No I didn't follow your setup. I tested it one by one.
It passed linx for 10 runs (1 hour plus.
Just the reboot is the problem. But when I shutdown and on again, there's no problem at all. It boots like normal.
Anyway, can winringo be disabled?

Weinter said...

winring0 is a library to access low system level it is required.
I think this is a system specific issue, you should check out what startups is in your system.

l e c a r o said...

Madrid.. hablas espanol? te pudiera explicar mejor... :-)


I have hp dv7... and i can not restart the PC running the K10...
it does not start after reboot
You have Windows 7? In Windows Vista this did not happen

even with this tool
http://amd.goexchange.de/ the same problem (in 7)

Could do like me ... turn off and on ... never reset


Weinter said...

No I am using Vista Win7 is still beta for that reason I am not using it.

Weinter said...

If you wanna switch back to Vista see the Vista Install Guide on my blog.
I included a link to the clean Vista Install Disc Without any CD-Keys as well.

madriddistas said...

I actually did some discussion about this problem with my friends who are using the similar kinda laptop and they happen to be going through the same problem as mine.

Yes I will check my startups in my system.

I'm sorry but I can't speak Spanish. I'm from Malaysia. hehe~

Anyway, me and my friends are using Vista. Win7 also have such problem. It happened to be a common problem for us. I can't seem to find a solution. Will post it when I know the answer.

Thanks for your replies guys~

Anonymous said...

Hey weinter, first of all, thanks for your blog, it's very informative. Just want to ask does this k10stat work on k8 cpu like amd athlon64x2 brisbane?

Weinter said...

I am not quite sure as I am not the author of K10stat but no harm trying.
Reason being whether it works depends on the PowerPlane design.
It is actually supposed to work only on K10 CPUs hence the name but it work on Griffin as well due to the similar power design as K10s although Griffin are K8.

Lord Malevolent said...

My QL-60 was 1.100v & 100C (hot enough to boil water),
now it's 67C @ 0.925v.

The odd thing was, even though i didn't set it to run at startup,
it kept the settings,
so when i got to the BSOD limit,
i had to pull the battery out for a while just to get it to boot...

CQ40 126AU said...

My system: Compaq CQ40 126AU with RM-72

P0: 1.0000
P1: 0.8500 (Pass IntelBurnTest 2.3)
P2: 0.7500

I will keep you all updated.

CQ40 126AU said...

Here is my FINAL result.

My system: Compaq CQ40 126AU with RM-72

P0: 1.0375 (Done IntelBurnTest)
P1: 0.7500 (Done IntelBurnTest)
P2: 0.7500 (Done IntelBurnTest)

Everybody please share your result.

CQ40 126AU said...

Is there any way I can lower my multiplier form 10.5 to 10 so that my max clockspeed will be 2000 MHZ from the original 2100MHz?

Weinter said...

Just enable Clock Control.

Anonymous said...


i have a AMD Turion X2 Ultra ZM-85 (Griffin) max. 2300 ghz.

the normale voltages are:

P0: 1.2
P1: 1.125
P2: 0.8

whick values i can try?

i' im interested in going as deep as possible in the p2 modus.


Weinter said...

P2 is a confirm 0.75V
You can try 1.05V for P0 and P1 at 1.075V.
If the values are stable you can push it further.

krimb1 said...

Just got a HP tx2 with a ZM-85 processor like yours banana. (So excited!)

Weinter did you mean 1.05V for *P1* and 1.075V for *P0*? I assumed so and with a little work tweaked them slightly further and wanted to share my results:

P2 @ 0.7500V
P1 @ 0.9500V
P0 @ 1.0875V

Happy undervolting!

Weinter said...

Undervolting is about tweaking and experimenting.
You can continue undervolting it lower as long as it passes the Intel Burn In test.

Ollo said...

Many thanks for this great app! I haven't had this much fun tweaking computers since I tried the 60 mhz bus on a Pentium 75 mhz years ago and overclocked to a whopping 90 mhz!!

Ollo said...

Oh, btw, any word on the north bridge voltage? I tried lowering a bit, not sure if it does anything.

Also, someone wrote the settings stayed on their pc after reboot. Same thing here - was a bit of a pain as I ended up pushing voltages to low and the pc just kept rebooting. Eventually I made it into windows and quickly upped the voltage.

Turion RM-74 here, 1.000 V in state 0.

Ollo said...

I can almost lower to 0.9875. Prime95 crashes on one core afte a while. Temps are much lower at that voltage though, so I'd like to underclock a little bit to see if I can make 0.9875 stable. Do you have any tips on how to change the clock speed via software? (No such settings iin the BIOS of course...)

Thanks in advance!

angel_01 said...

I have the ZM-80 processor (2.1 GHz, 2MB L2 Cache) and tried Weinter's tested settings (1.075V, 0.900V and 0.750V) at unganged mode. I was on the 4th run of the IntelBurn Test (at 'high' setting) when I decided to set the frequency control to Unganged. My temp reading from HWMonitor rose to a constant 106C with max 107C from 98C. Any insights on this sudden rise of temperature?

angel_01 said...

^ [correction]: First to fourth runs were in GANGED mode, fifth was UNGANGED.

Weinter said...

Let me explained unganged and ganged mode.
In unganged mode both core frequency steps differently, at any one moment both Cores can be in different P-States.
The P-State each core is at depends on CPU loading. Hence the performance is "just enough". In ganged mode the CPU P-state can be based on the highest load, average Load or lowest load. Both CPU P-state are identical at any one moment hence it will be slightly hotter.

Weinter said...

The settings I used is only suitable for my RM-72 Processor batch.
You ZM-80 could achieve better or worse result depending on how well the CPU chip batch was fabricated.
You can start from the original voltage and drop it if it passes Intel Burn In you can drop it further until it fails then use the settings before it fail for general usage.
If you live in the same country then I might be able to help if you are still clueless.

angel_01 said...

Based on the AMD Processor Specs, ZM-80 and RM-72 have the same power rating, so I used your undervoltage values as my starting point. I have been those values for two days now, without any problems so far. I've tested it for the high performance and balanced power modes (depending on where I'm working).

Thanks for this info. This can help extend my lappy's life a bit, since I have been using it extensively (i.e. overnight simulations @ high perf, etc.). :)

Weinter said...

I hope you did testing with intel burn in because if you undervolted under the stable tested values you can lead to
1)CPU calculation error.
2)Occasional BSOD especially during the p-state with the wrong voltage.

Ollo said...


Any chance of finding a workaround to get lower voltage than 0.75? I have a feeling my CPU would go lower than that in the P2 state.

I played around a little bit with the FID setting, but couldn´t find a stable solution other than the default. I'm trying to find a way to underclock, but no success so far.

I have also tried changing the NB voltage on the debug page. Any suggestions here? Is lowering the voltage doable?

Weinter said...

The voltage cannot go lower than 0.75 and I found that NB Voltage doesn't change any thing at all.

ahben.hashriq@yahoo.co.uk said...

i juz undervolt my lappie..
as the final result is 1.0375,0.8625,0.7500
its extremely low?
my processor spec is same as ur processor weinter..
give ur comment..

Weinter said...

PState 2 is confirm 0.750V
I think for PState 1 you can go below 0.850V
Your PState 0 is much better than mine since it can go down to 1.0375.
Congrats you got a processor from a better batch than mine.

aHBeN HaShRiQ said...

im juz one of the lucky one only..
tq for ur guide..

Ollo said...

Thanks, Weinter!

I have lowered my temps by 9 degrees under load :-)

Thomas said...

My ZM-82 in my HP Pavilion DV7 is running 10C lower. Great Burn test results >> http://kadusa.com/ZM-82_burntest.jpg
Thanks for the great guide.

kianog said...

Thanks for the great guide Weinter.

Couple of things that are confusing me:

1) Windows seems to remember the Voltage set by K10stat even after a reboot? (With no task scheduled)

Even if I delete k10stat.dat, when I open up k10stat, the CPU voltage value is remembered?

2.) Also, K10Stat doesn't seem to be obeying my up% and down%. I'm trying to run only pstate0.

If i set up% and down % really low it doesn't seem to have the desired effect (sometimes seemingly transferring it to a pstate2 !)

And then even when I do seem to manage to keep it at the pstate0 voltage setting, the frequency will still jump around between 1050 (P1) and 2100 (P0) on both cores ???

I have tried both with window min cpu power set at 5% 50% and 100% - which of these should I leave it at in windows power options?

Again, my goal is to have p0 running at full frequency (2100) at all times.

Thanks so much in advance for your advice :)

kianog said...

Sorry, each time I annoyingly wrote pstateo or po above i meant P0 !

Also one more Q: if I run the scheduled task, what is the advantage of running it as a system task? If i am the only user of the pc can i not just run it as a regular task?


Admin said...

1)I think you can try to find K10stat.dat inside the C:\Windows\System32 folder.
2)If you want to run it at 100% best is to used Vista/Win7 Processor Management.
Go into Control Panel, Power Options, Change Plan Settings, Change Advance Power Settings, Processor Power Management, make sure Maximum and Minimum Processor State is always at 100%.

kianog said...

Thanks for the response.

I have set Windows min CPU power to 100% in power options, but it seems as though K10stat still fluctuates between Pstates on the info panel?

What should I set up% and down% in K10stat to? And what about up(ms) and down (ms). Or should all these setiings be irrelevant if Vista power options are set to 100% min CPU as above?

That would make sense, but it doesn't seem to work....like I said, sometimes even if the voltage shows P0 level, the freqeuncy on both cores still fluctuates between 2100 (P0 freq) and 1050 (P1 freq).

As i said, I would ideally like it to run at P0 2100 Mhz all the time.

(BTW I have a ZM-80 in a HP DV5)

Thanks so much if you can help clear up this confusion!

kianog said...

OH...2 more bits of the confusion!

1.) When I said that Vista seems to remember the K10stat settings after restart, I meant even if K10stat isn't run.

I dropped my P0 voltage to 1.0375 and after a reboot that's the voltage I get even before I launch K10stat (checked with Coretemp64 instead!) Isn't this unexpected behaviour? It certainly makes testing difficult, as windows won't restart nicely if i drop voltage into BSOD territory.

2.) I set Vista power options to 100%min CPU as above, then restarted. After restart, voltage did seem to be set permanently at P0 level (1.0375) even if frequency was still bouncing between P1 level and P0 level. However as soon as I set K10stat clock control to enabled (Ganged based on highest load core) it drops straight to P2 with no load.

Thanks so much if you have the time to help me sort this out :)

Admin said...

1) You can try to do a hardreset of the laptop to reset the voltage.
Somehow the CPU registers did not get reseted when you rebooted.
2) You must disable clock control in K10stat if you want vista to manage frequency p-state control.

kianog said...

OK...I think I get it.

But is there any way to use K10stat's clock control and leave it on P0 max frequency all the time?

Thanks for the speedy responses :)

Admin said...

Yes you can simply click on the button holding the P-state.
For example after you enable Clock Control K10STAT takes over CPU Power Managment
To switch to P-State 0 all the time, simply click on the 2 buttons under Core0 & Core 1 your CPU switches to the mode immediately.
Look closely at the second picture.

kianog said...

Great...that seems to work for all normal usage.

Bizarrely, during IntelBurn Test, under 100% load, it still seems to drop into P1 at times...any reason for that?

And, is it necessary to run the scheduled K10stat task as a system task? Wasn't sure about that from the guide..what are the advantages?


Admin said...

Thermal Throttling?
What is the temperature at that State?
Reason is because I want K10stat to run in the background I don't want it to be seen in the taskbar hence run it as SYSTEM account will make the taskbar icon disappear.

kianog said...

Thanks for the clarification on the system task thing.
I think the temp at that State is probably in the 90s. Would that suggest thermal throttling? What governs that and when is it designed to kick in?

thanks as ever :)

Admin said...

Don't worry about it the limits seems to be in the 90s.
It is govern by ACPI code in the BIOS, designed to kick in when the CPU reaches the defined temperature.

Admin said...

Also running as SYSTEM account for multi user machine will ensure K10Stat is started whenever anyone uses the machine instead of the specified account only.

kianog said...


Thanks so much for the helpful responses....think I'm basically happy with my undervolting now :)

One more question. How fow K10Stat's unganged clock control compare with the Vista default unganged clock control?

It seems to me that it generates a tiny bit more heat, but maybe I'm just imagining?


Admin said...

Gangged = Group 2 CPU as 1 so when CPU 1 speed up, CPU 2 speed up as well so more heat.
Unganged = CPU1 and CPU2 speed up differently according to loads so less heat.

kianog said...

Yeah, I understand that...I was just wondering what (if anything) was the difference between:
a) K10STAT's unganged clock control, and
b) leaving K10STAT's clock control off and using Vista's default (unganged) control.


Admin said...

No difference as far as I can observe.
Vista/Win7 Control would be the hardware defaults because Griffin by default uses unganged mode, it has separate power planes etc.

Anonymous said...

By the way, can this K10STAT undervolting application works for window 7?

I tried undervolting by using 1.05, 0.95 and 0.75 and it passed Intelburn test.

However, despite setting it to start automatically through task scheduler (following ur guide), everytime i restarted, my laptop still runs at the original cpu voltage of 1.10, 1.00 and 0.80.

I checked my task manager, although there is a process of "K10stat" running, but from my cpuz the voltage are still at the original.

For task scheduler, i used "-lp:1 -ClkCtrl:2 -StayOnTray -nw"

So any mistakes did i made? So rather im suspecting, is there special adjustment i need to make for it to run automatically in win 7? (such as setting properties to run capability for vista or something)

Thanks greatly.

Admin said...

When you run in SYSTEM account make sure the K10stat is in
C:\Windows\System32 because the default path for System Account is
C:\Windows\System32, K10Stat works ok on Windows 7.

topo said...


Just one questions:

This HowTo it should work for my CPU: AMD Turion II X2 M500 !!!???
What do you think?

Thanks everybody!

topo said...

I tried to answer myself to this answer, but anything good for the moment!

The CPU that I have: AMD Turion II x2 M500 is working under K10STAT(it seems to be working) but unfortunatelly for me I didn't find the right value for the 5 P-State(P0, P1,P2,P3,P4,P5).... For exemple with some value(0,8250 , 0,8125 , 0,800, 0,7875 , 0,7750) the laptop is restaring, and with some value does't happen anything !!

Can I have an ideea from someone with more experience ... because I am not sure that I applied the HowTo like described in article!!


topo said...

This is the link on the forum with more photo and details, so please HELP because I really want to undervolt this CPU (turion 2 X2 M500)!

Jon U said...

Thank you very much for the guide, had trouble getting it to start minimized. Worked like a charm with your guide.

redland said...

Hi, great guide. Thank you.

I am running Win 7 x64 and a PhenomII 940.
When I run K10stat manually and select apply to the profile the voltages change and i can see it in CPUz. but I have tried your guide and and cannot get it to work on startup. The service appears to be running on startup but the voltages don't change.

any ideas how i can get it to work on boot?
I've placed K10stat in windows folder if that makes a difference, should it be somewhere specific (and yes the service is pointing to the correct location)

Admin said...

The program must know where to get the settings from the file K10stat.dat.
If you put the K10stat.dat in C:\Program Files\K10STAT then you must enter the same path in "start in" parameters in task scheduler.
Otherwise the default path is C:\Windows\System32.

Vyash said...


The above link is for those wanting to undervolt the Turion II M500. I haven't tried the voltages myself, but I've heard success with those values.

@topo: 0.8250V for P0 is definitely too low for your processor. The low voltage causes the processor to shut itself down, as it cannot complete full clock cycles. In other words, you've underclocked too much!!!

zach said...

AMD Turion x2 RM-72 running on windows 7 64-bit

orignal undervolted
1.1250v 1.0750v
0.9500v 0.9000v
0.8000v 0.8000v
so -0.05v all the way did many heat test ran perfict noticed a 9c cooler.

have one question i have the 64-bit system but it saved it under system32 is that ok?

Admin said...

No issues.
System32 is a System Folder there is no System64. It is a legacy naming sort of thing.

zach said...

Found one more problem i setup a tast schedule to run k10 at startup it well auto start if i just restart the laptop but if i shut it down then start it goes back to defualt voltage settings any ideas?

Admin said...

You probably missed out something.
Try resetup K10STAT and read my guide again.
I already put in more information regarding K10stat.dat and possible pitfalls.

expanium said...

Hey men. Thanks for tutorial.
But i have one question is possible to save settings after time i restart/install/format pc without K10STAT? So i can use program only one time like bios settings.

Cheers ;)

Admin said...

Because the Voltage Setting is determined by the values in certain CPU registers.
Voltage value is not hard coded into the NVRAM and never has been.
Otherwise whenever you swap CPU with a less undervoltable CPU it wouldn't boot at all.

zach said...

when u talk about in the general settings were u can set it up as a system task, then in the triggers you say or create it as a startup process do you do both these settings or just pick one that maybe were I messed up

Admin said...

Pick one only.
Startup is preferred over login.

expanium said...

I try undervolting my ZM-85 and it passes the Intel Burn test. With these voltages:
P0: 1.0875V
P1: 0.7625V
P2: 0,75V

It's normal the minor difference in voltage between P1 and P2?Because it's only ,00125V

Another question is stable put the lowest voltage in P0? Because in this state is where we play heavy applications and play games.

Thanks ;)

Admin said...

As long as it is stable, passes the test then it is ok.

zach said...

I created a new Task Scheduler after restart it fails and seas "operation being requested was not performed because the user has not logged on to the network the specified service does not exist"???

zach said...

Fixed that problem it would not work when I put C:\Program Files\K10stat\K10STAT.exe in the start up option when I kept it at defuilt system32 it works.

expanium said...

Ok thanks and in your Acer which stress level you use? Standard is enough?

Admin said...

Standard is good enough.

Anonymous said...

First of all, thanks a lot for the guide. My max temps went from 89C to 76C.

I recently performed a clean install of Windows 7 K10Stat is running in the background just fine but the problem is that the icon is not on the tray, and it I like it being there. I used -StayOnTray but it still won't show. Any idea what the problem is?

Admin said...

If you like the icon on the tray run it as your login account not as SYSTEM account in task scheduler.

Anonymous said...

Ah, thanks. I don't know why I did not think of that.

mad_waks said...

to ZACH and Mr. ADMIN

for RM-72 (in Compaq CQ40 310AU), what may be the correct setting to cool down this unit a bit? I really play games having high requirements, then i pray for my notebook to survive for a long time.. lol.. but the heat, so hot... any nice setting that will not affect the performance at all?


How do i enable K10stat clock control?

LZ said...

Ur guide is really usefull...
I'm using CQ40-506AU
with RM-75
ur temp seem to be lower than mine
i got as high as 93 degree

i manage to run intel burn test at
1.05, 0.75, 0.75
without any problem

at first i'm running at default
speed it seem my speed in intel burn test is around 4.4 sumthing

later when i lower the voltage
i get speed around 5.6-5.8

Sam said...

I managed 1.0375 P0 with half an hour worth of testing using IntelBurnTest (no BSOD nor any errors). My HP DV6 with its RM-75 is now running 13 degrees cooler (max of 86 degrees down from ~99 degrees)! :D yet to undervolt p1 or p2

Anonymous said...

The only way to put this to work in w7 x64 starting in systray and with
-lp:1 -StayOnTray -nw commands was putting the a shortcut in startup folder and adding the commands in it. With task scheduler it will never appear in systray.

Anyway thanks by all this since it put me in path to solve my issues.

Anonymous said...

I am user from 5:32

With M520
I have
P0 1.1v
P1 1.0v
P2 0.9v
P3 0.8v
P4 0.725v

the only one i pushed to the BSOD point was the P4 that at .7125v crashed just after setting it.

Admin said...

If you want the icon to appear you have to run it as user\username not SYSTEM account.
If you use SYSTEM account the program will run but not be visible.

Anonymous said...

I didn't run it has system. I think i run it has user account. At least i didn't touched in system interface like you have shown above.

Anonymous said...

Have one the new gateways with an RM-72 chip at 2100@1.2v@86c I can get 3600@.9875v@76c. I can even surpass 4500@.9857v@86c.

I have no use for 3 power state as the two best voltages are .7500v and .9875v. My system jumps from .7500v to .9875v when changing operating frequencies. For instance 1750@.7500 works but 2100@anything below .9875 does not.


Anonymous said...

Could you tell me what exactly "downcore" is and what the settings 1 and 0 mean?

Admin said...

Turn off one 1 Core.
0 means Core 0 and 1 means Core 1.

ononos said...

just underclocked my turion 2 ultra m600:
p4: from 0.8500 to 0.7375
p3: from 0.9500 to 0.8000
p2: from 1.0500 to 0.9000
p1: from 1.1875 to 1.0375
p0: from 1.2375 to 1.1000
Tested with intelburntest at standard settings. Everything is stable.
Thanks a lot for the guide.

ononos said...

edit: i meant undervoltaged not underclocked

ononos said...

edit 2: Not much of a temperature difference though (around 5 C)...
compared to my old laptop whitch had an xp-m 28800+ (used crystal cpuid on that one)

Admin said...

What the the max temperature?

Anonymous said...


I understand that this site is mainly for AMD Mobile processors, but I did this to Athlon II X2 250 desktop chip that I use in my HTPC.
original -> modified
P0 1.35V 3.0GHz -> 1.300V 3.6GHz
P1 1.25V 2.3GHz -> 1.000V 2.4GHz
P2 1.15V 1.8GHz -> 0.825V 1.2GHz
P3 1.00V 0.8GHz -> 0.700V 480Mhz

My Gigabyte board seems to overvolt slightly compared to the defined voltage so add about 0.02-0.04V to all above values and you get the real voltage seen in CPU-Z.
I overclocked the FSB to 240MHz and started undervolting the cores with this app. This is absolutely amazing utility! So far everything is stable in all P-states.

Anonymous said...

Ok so i undervolt my laptop. Is there anyway that i can change it back to my original fatory settings?
If i format my laptop would it change back to normal?
I really need help on this, i'm hopeless with computers and stuff.

Anonymous said...

I have successfully undervolted my amd zm-84 using this guide (thanks a lot! ^^) while I am on the balanced power plan. Now, everytime I switch to power saver, when my notebook is idling, it is stuck at my p0's volt even though the clock speed is at p1/p2, meaning I consume more battery when on power saver than on the balanced power plan. How can I fix this? Thanks.

Admin said...

If you have any 3rd party power management program, uninstall it Windows Power Management is good enough.

Anonymous said...

I only have three power plans: power saver, Hp recommended (balanced), and high performance. Everything works fine with Hp recommended (it is what I was using when I did the undervolt), but there are times that I switch to power saver (when I go to class, for instance). Is my balanced power plan considered 3rd party? If so, how can I fix my power saver volt problem?

Admin said...

Go to Advance Power Setting.
Then check the Minimum Processor State under Processor Power Management.
Make sure all the values are set to a default of 5%.

Anonymous said...

Power Saver had values for battery and plugged-in to 5%. And for some weird reason, I tested it now, I am seeing correct voltages and they are adjusting properly. Must be cpu-z glitching before and giving me incorrect voltages?

Once again, thank you very much for the help. I have been recommending this blog to all of my friends who's unaware of undervolting. :)

Turk4n said...

Recently my laptop has acted strange, even when undervolted it reaches 90 degree celsius, which is bad for me...
Before I had like 75~80, while doing "gaming". Now 90; before while idling I had 40 degree, now I have 56, light load, was then 51~56; now 60~64. Watching flash videos before 57~61, now 64~67. While watching video 1080p mkv, before 61; now 69~72...
Feels bad. Also to note, the newest version out of K10stat 1.32 seem to have a lock function; I yet to understand what it does, since I feel no different from it...
Plus to add something while talking about it, I can't underclock and undervolt won't work, just end up with BSOD...

Admin said...

It works perfect check the location of K10STAT.dat.
You must specify the target location of K10STAT.dat in task scheduler if it is in C:\Program Files otherwise the default is C:\Windows\System32.

Admin said...

I believe to enable Lock Pstate you must select Clock Control First.

Admin said...

Anyway Thanks for the heads up, I haven't realised a new version is out.

CQ40 126AU said...

Does anyone know what is the change made from v0.91 to v1.32? Just curious.

Turk4n said...

Here is the new location if wanting to get newer versions.
Cheers !
Still having trouble with underclocking....

CQ40 126AU said...

I have had the latest version for sometime now. Just wonder what was the changes made?

Василий said...

Thank you very much for this post! My HP Compaq 615(Athlon QL-66) became cool&quite!( 45C when websurfing,texting etc. and 68C when CPU-burning! ) I've choosed 0.9V\1.0V(default was 0.95V\1.1V)
from Russia with love :)

Anonymous said...

From my original (1.1--0.95--0.8)
I've got: 0.987--0.75--0.75

Turion ZM-80 in a DV3Z
Keeps it 5-10 deg.C cooler all the time.

Josiah said...

Hi is it possible to assign different voltages to my cores? On of them always fails prime 95 tests but i want to keep the voltages as efficient as possible.

Im using version 1.32 and i can see the ninimum up(ms) has a value of 0 now. There is also a NB downcore function and i dont know what it means or does...

Yumi Y said...

Hi, I was using Puma State Control back then but i didn't like it because it was a hassle to set and test because it lacked a GUI. Thanks for this tool and guide! Here are my undervolting results on my HP tx2 with an RM-74 processor:

2.2GHz p-state0 from 1.125V to 1.075V
1.1GHz p-state1 from 0.950V to 0.750V
550MHz p-state2 from 0.800V to 0.750V

Stress test was done with Prime95 and IntelBurn (5-pass) returning stable and consistent results. I didn't expect pstate 1 and 2 to be able to operate on same lower voltages, but hey I am not complaining; less heat, less noise, more green :P, more battery life :)

CQ40 126AU said...

Version 1.41 has been released.

Download here: http://sites.google.com/site/k10stat/

angel_01 said...

Yesterday, I reinstalled my aspire 4530 (Turion Ultra) so I re-did undervoltage tests. After many (and looooong) tests with IntelBurn and BSODs, I finally came up with the following results:

powerstate: orig_voltage [orig_VID] --> new_voltage [new_VID]
P0: 1.1V [36] --> 1.0625V [39]
P1: 0.95V [48] --> 0.75V [64]
P2: 0.8V [60] --> 0.75V [64]

Notice that P1 and P2 both have the same new undervoltage value. :) This is OK in my case, since IntelBurn gives stable results.

BTW, I live in the tropics where the ambient temperature is around 31*C. XD

Hope this helps others just as your site helped me in undervolting.

angel_01 said...

I forgot to mention that my Aspire 4530 has ZM80 processor (P0: 2.1GHz, P1: 1.05 GHz, P2: 525MHz). My bad. :p

CP Jen said...

I have an HP tx2-1270 with the RM-75, 2.2 Ghz, 4GB RAM, and 500GB Hard Drive. I have installed Windows 7 Home Premium. I have installed the new N-trig drivers (version 2.39), in case this matters.

I cannot seem to get stable voltages without getting the BSOD.

I can get down to
PO: 1.05
P1: 0.7625
P2: 0.75

Clock control enabled.

With this the computer doesn't get BSOD during Intel BurnIn but it does fail the BurnIn Test.

I started with the defauls:

P0: 1.125
P1: 0.95
P2: 0.80

If I run the BurnIN Test on the defaults it doesn't get a chance to BSOD or fail the test because it shuts off for being too hot.

So, I started with P0 and cranked it down to the next level, did the BurnIn test, failed but didn't crash, cranked it down another notch, did the BurnIn test, failed but didn't crash. And kept going like that until I finally reached a voltage (1.05) that was the lowest one it could go without BSODing. But it still failed the BurnIn test.

Then I went through the same process with the other p-states.

So, in the end I end up with 1.05. 0.7625, and 0.75 that fail the BurnIn Test but don't BSOD.

What am I doing wrong? Or what else can I do?


Admin said...

You have to check does the RAM have any errors?
Because any proper Chip should pass the Burn In Test without encountering any error.
You should focus on solving the issue on passing Burn In without any undervolting first.

CP Jen said...

How do you check to see if the RAM has any errors? Sorry...newbie here. And thanks for bringing this up.

Admin said...

Memtest86 I think Windows 7 itself has it, but I have forgotten how to access it.
Alternatively just google it there are many versions of Memtest86 on the web.

CP Jen said...

OK, I'm at work now but when I get home this afternoon I will run memtest86 and come back here with the info. Thanks a whole lot!

CP Jen said...

So this afternoon I let memtest86+ (ver 4.10) run for 2 passes and go ZERO errors. I know a lot of people suggest running it overnight but the documentation for it indicated that if you're just an everyday user, like me, that one pass is probably sufficient. And, since each pass is essentially a random sample of your RAM it should be representative of all of the RAM (I'm a statistician so this is especially meaningful for me).

So, I'm happy with 2 passes telling me that my RAM is okay.

So, what's causing my undervolting to fail BurnIn? And, by the way, those setting did eventually BSOD later in the day.

I would really like to reduce the heat on this puppy as I often use it in my lap!

Admin said...

If everything is all right there might be an issue with your Processor, any working processor without undervolting should be able to pass Intel Burn In without issue.

CP Jen said...

Geez...this sounds bad!

When I do the BurnIN test without undervolting it jsut gets too hot and shuts off...it never gets a chance to get a result from the BurnIN test.

After it cools off, though, it starts back up. I only tried this twice.

So, now what? What can I do to diagnose my processor?

By the way, thanks a lot for helping me. You've been very nice and I really appreciate it.

Admin said...

First you got to solve the processor overheating.
You can buy a tube of MX-2 Thermal paste open your laptop and clear by the mess made by the factory and replace their thermal paste.
At the same time use brasso to polish the metal contacts to improve thermal conductivity.
Lastly you can try copper mods.
Google Copper Mods and you will find online forums that teaches you how to do it.

Admin said...

If you are still under warranty and you are not confident of your practical skills demonstrate the issue at their service centre personally and demand they do something about it.

Squall Leonhart said...

THANKS A HELL LOT Weinter !! I was looking for an effective guide to undervolt my AMD RM-75 processor and i must say I'm excessively impressed ! I had been worried a lot about my Processor's lifetime as it reached 100 C mark while gaming but now that i have properly undervolted it, my temperature has come down by 10 - 12 C THANKS ONCE AGAIN !! THANKS A LOT !! I'm definitely gonna recommend this guide to anyone concerned. YOU ROCK Weinter \m/ B-)

Anonymous said...

Thanks for such a helpful article. I have HP6735s with RM-74, and can under volt its p1 and p2 both to .750v even at the room temp of 38C. But for p0 it crashes in intel burn-in test after 20-30 seconds where cpu core temp reaches 91-92C. Its BSOD whether i change p0 to 1.1v or leave it at default 1.125v. Any idea why?

Admin said...

If your CPU BSODs at default voltage there is a problem with it.

Anonymous said...

Thanks for reply. I tried intel burn-in without running K10STAT, vista power management was at balanced. It passed the test. I noticed that the cpu was throttling continuously between 2200Mhz 1.125v and 850Mhz 1.2v state, and cpu temp was 99C-100C. I think that in K10STAT while cpu locked at p0, cpu shuts down due to overheating.

Admin said...

The principal of undervolting works on the fact that NOT ALL CHIPS are identical.
Some of you guys may have a chip that narrowly passes QC test hence not very undervoltable therefore you yield may vary.

Anonymous said...

am damm scared if doing this thing to my Pc cos fear of damage.. I use Hp Touchsmart tx2 and the heat make me unconfortable but to undervolt it hummm. wahaiii am dam scared.. need some help?

Anonymous said...

Hello, i have been testing this undervolting. I have a zm-82 processor and according to k10stat, my starting voltage for P0 was running at 1.3V, ive put it down to 1.05V (because of seeing the first comment) for P0 at a stable rate. But when i tried doing P1, i put it at .95V which is apparently supposed to be default according to the first comment, but right when i click apply, i get the BSOD. i then reseted my laptop and openeed k10stat, the option of P2 was missing. I then tried P1 again at .95V once again cause i thought the BSOD may have been caused by something else. But again, i got the BSOD and had to reset, thsi time when i opened k10stat, only P0 is visible. I am very confused and curious to know if this is normal or did i screw my laptop up. Thank you for ur help

Admin said...

Shut down the computer remove all power source press & hold the power button to reset the CPU register.
Then turn on the computer and run K10STAT again.
Don't anyhow set arbitrary voltages, minus maybe 0.025 then run Intel Burn Test to test for stability then repeat until you hit the point before it becomes unstable.Then reboot and set it to the point before it becomes unstable. That is the limit.

Do it for P0,P1 and P2.

Don't look at other's voltage of the same model because different processor batch manufacture has different limits due to fabrication defects.

Anonymous said...

is it possible that i permenatnly damanged my cpu by setting it too low?

Admin said...

No, it is not possible to damage hardware by undervolting, overvolting Yes but not undervolting.
Read the article it will explain why.
You just need to reset the CPU registers by doing a full reset instruction on my previous post because sometimes a restart doesn't clear the CPU machine specific register.

Anonymous said...

I've successfully found voltages for all my pstates, but im having trouble setting up the task to start it at the startup of my laptop. Im having trouble finding my k10stat.dat file and does it HAVE to be in program files for it to work or it doesnt matter as long as the path leads to k10stat.exe? my main trouble is in the "action" tab of the task schedueler

Admin said...

I can go into details on the K10stat.dat behaviour with the elevated permission but it maybe too confusing, so simply add the "start in" parameters and it will load the K10stat.dat from Program Files.

Anonymous said...

his should work with the new mobile Phenom II processors as they use the K10 architecture, right? And could you tell me what you have heard about the heat outputs of the Turion IIs? I am thinking of ordering an HP dv6z and I trying to decide what processor to go with. I am leaning towards the Phenom N830 slightly over the N620 because my best guess is that performance will be about the same but the N830 has 25TDP to the 35TDP of the N620

Admin said...

Yes K10stat should still work.
Your undervolt millege maybe vary by production batches.
The Turion II should be less hot than the Turion because they are based on the K10 Core architecture not the old K8.
But still I would say compared to Intel Mobiles they are still less efficient and not up to par performance wise.
You can imagine the Quad Mobile Phenom is around the performance of a high end Core i5 and you can almost be certain the power consumption is higher as well, therefore I would consider AMDs if the price for that overall performance outweighs all the cons.
I don't blindly support any branding, instead I analyse the properties to decide the outcome.

Anonymous said...

Thanks for the response. I am currently looking at the dv6z and dv6t and I feel like the 'z' is the better bang for the buck, as it starts $100 cheaper. Even with the upgrade to the Phenom N620, which should perform about the same as the i3-350M in the 't', it is still $50 cheaper.

Admin said...

I tried configuring the HPs and found that you can get the Quad Phenom 1.6GHZ (in case the fastest quad literally burns)and it is about the same price as the i3 350 version together with Radeon 5650HD (40 bucks diff).
Quite Competitively price AMD CPU.
I am sure the Quad 1.6GHZ will out perform the Core i3 350M.

Anonymous said...

Well I ended up going with the Phenom II N620 (2.8GHz). It was cheaper than the base i3 in the 't' and I thought it would be the best combo of performance and thermal efficiency. I'll be sure to let you know how it works out

Anonymous said...

Got it today and so far so good. Normally runs around 40C and maxes out at 68C while running Orthos for a while, ambient temp of 23C. I might undervolt anyway to get some extra battery life, though.

Anonymous said...

Just got done undervolting the Phenom II N620. Results so far (I might try and go further),

PO (2.8GHz): 1.2250 to 1.1750
P1 (2.5GHz): 1.1625 to 1.1125
P2 (1.8GHz): 1.0125 to 0.9625
P3 (1.4GHz): 0.9375 to .8875
P4 (.8GHz): 0.8000 to .7625

Getting average temps 2-4C lower and a max of 66C now.

Admin said...

So how is the WEI?

Anonymous said...


CPU - 6.3
Memory - 5.9
Graphics - 6.7
Gaming graphics - 6.7
Primary hard disk - 5.9


Single - 2898
Multi - 5601


7089 (2215 CPU score)

Admin said...

Sorry I meant NOT mobile ovens.
The temps are quite good.
WEI score are good too.

Anonymous said...

I am extremely happy that it isn't a mobile oven as well. And the benchmarks have surprised me a little, they put it basically on par with the i5-430M and slightly ahead of the i3s. Battery life has also been a pleasant surprise. I have been getting almost 4.5 under normal use, which is the same that dv6t owners with core i processors have been getting.

Matthew said...

When I run Kstat for the first time it says my voltage is 1.3250v for P0, 1.225 for P1 and 1.100 for P2. I have a RM-72. I thought the highest voltage was 1.2v? I undervolted each pstate by .05 as you said and it is running much cooler, however it confuses me and I am thinking I could run it even cooler?

Anonymous said...

You could probably push your voltages even lower if you want to take the time to do it.

Matthew said...

problem is in K10stat in the cores it has the wrong info. I know for a fact I have a 2.1 ghz processor but it shows a value in p2 of 800, then 1300, then 2500. I have an RM-72 according to CPUID and I know the speed is 2.1 ghz. So why doesn't it show as 550, 1100 and 2100??? I don't get it. Perhaps because it is a refurbished laptop they put in a different processor???

Admin said...

This is strange can you delete the K10stat.dat data file and rerun K10stat? Any idea if it is a ES Processor?
Can you update the firmware to the latest version?

reeadon said...

Hi, first k10stats is great software :) all works great on my Athlon x2 QL-65 finaly i found solutions for overheating :) but i have one issue i read 100s how to set up k10stat to sturtup with windwows but can't get to work :(
i found that in taks shulder is showing incorect cataluge name but i put line adrees corrext checke 100s times:) for exemple if i have
k10stat in C:\Users\reeadon\software\K10STAT141\

Then i put C:\Users\reeadon\software\K10STAT141\k10stat.exe do i right ? :)

if yes then pls help :)

System: W7 HP
Acer 5536g
Amd Athlon 64 X2 QL-65
ATI Radeon 4570
4 GB Ram

Thx for any help and sry for bad englsih :)

Admin said...

You have to add "C:\Users\reeadon\software\K10STAT141\" to "start in (optional)"

You have to add "C:\Users\reeadon\software\K10STAT141\k10stat.exe" to "Program/Script".

reeadon said...

Thx for answer :) but after i changed to what y write now is showing that user did't log in in to network (: i unchecked that option with network like is show in then quide ehh :)

pol said...

Hi, i have a rm74 acer aspire 5536g
have succesfully tested p-states with intel burn
P0 1.0875
P1 0.8000
P2 0.7500
anything lower bsod.

but its not stable while gaming never bsod but will crash/power off
also happens not very often while online or video chat with msn skype
and sometimes out of the blue for no reason i can figure out. have tried raising p-states but id really like to find out which p-states r causing the problem?? any help would be much appreciated

thnx pol9o

pol said...

starting to get on me tits now,
got p-states at
0.7625 should i leave this at 0.7500 i understand this is a dead cert?
passes intel burn at 0.7500

still powers off when gaming need help, but thnx for the app least im able to game unlike before

Admin said...

As long as the values tested doesn't BSOD when put under Intel Burn In load test you can consider them stable.
0.75 is the lowest for P3 in fact I am pretty certain 0.75V for P3 is almost a confirm working value.

pol said...

ok thnx,no only BSOD below first mentioned p-states, is gaming it crashes not sure why when tested on high with intel burn. anyway ill set p3 back to 0.75 and im pretty sure the problem is P0 even although it passes intel burn at 1.0875 im sure this is the p-state causing the probs ill start experimenting with P1 see if it will be stable while gaming below 0.85, suppose its all just trial and error, anyway thnx and much impressed with the app, knocked down temps considerably.

Admin said...

You might want to check the temperature of the GPU and CPU.
Usually abrupt power off occurs when the GPU and CPU are overheating so the system emergency shuts down.

pol said...

yeah checked all that, wasnt the problem, even when using pc normally on idle would crash so had nothing to do with gpu. think was k10stat not working with my k11 processor,or not being too stable on win7 64, recently changed to x86 info&controlGUI http://www.trilobyte-se.de/x86iandc/index.php/download works a treat can even get my voltages down to p0 1.87 p1 0.837 p2 0.750, without and irregular crashes, so anyone with and aspire 5536g or rm74 give x86 info&control a try. oh and anyone with 5536 if u find a workin fan control app, leave a message here plz would be much appreciated.

Admin said...

The new utility looks good.
But too bad can't try it out.
I don't have the old laptop anymore.

reeadon said...

Hi, what about FID we know that amd mobile cpu's are lock but why when i changed fid from 13 to 16 i have incresse cpu speed from 2100 to 2400 and any software i try saying this same like cpu-z or coretemp saying that after change clock speed is 2400 any idea ?

Admin said...

Although CPUZ reports the FID has change but if you run any benchmark you don't see any difference so you can only conclude the FID is hardware locked.

reeadon said...

Is any possieble to change fsb speed or Fid to higher on amd athlon x2 64 ql-65 (acer aspier 5536g) i spend a lot of time at google but can't found any solutions i try mod bios etc ...
If y know any solutions to increse cpu speed without increse voltage pls provide it .

Thx a lot for any help

Nuno said...

I have an AMD ZM-85 Ultra (hp dv6-1240ep) and the minimum I can undervolt on P0 is 0,125. How can I undervolt only 0,05? Thanks in advance

Admin said...

The minimum you can undervolt is dependent on the quality of the processor not method.

Nuno said...

My default voltages were:
P0: 1.1250
P1: 0.9500
P2: 0.8000

I managed to undervolt P1 to 0.9000 and P2 to 0.7500.

However, P0 always gave me blue screen at 1.1250, 1.1125, 1.1100 and 1.0875. I then decided to up the voltage to 1.1375 and the system seems more stable. Isn't that odd? Maybe it's best to get a cooling pad and then try to undervolt P0? My processor is an AMD Ultra ZM-85 Mobile. Laptop is HP dv6-1240ep. Thanks

Admin said...

Delete the profile data file and reload K10Stat.
There is no reason it should be unstable at default voltages.

Nuno said...

I erased the all the files and re-downloaded k10stat. Even still, it is unstable with the intel burn test at the default P0 Voltage( 1.1250). Using cpu core temp, it reaches 90-95ºC during the test.

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