The "Undervolting" Guide

You're lucky to have a rig that came with an adequate cooling system. Many users
have laptops with fans built to please reviewers' ears and not to cool the CPU.
I have to undervolt (20C difference under load) so Fujitsu could save $5 on the fan
in a $1,000 machine.

 

i've installed windows 7 and now i can't get the temps like in vista. before they were about 28ºC idle, and now they are 40-57ºC idle...

 

You must have been reading the wrong sensor before.
I've never seen a laptop CPU run at less than body temperature unless it was turned off.
28C is 82F, room temperature in Hawaii.........

 

Where's download site? I found a blurb on diefer.de but no link to click on.

Cheers,

 

I just checked, and you need to register for an account first, verify it by clicking on the link in the e-mail you'll be sent and then login. After logging in, you'll see a big 'Download File' button in the bottom-right corner.

 

is it possible to get crashed in orthos but no bsod?

 

now i put my hand in the air exit and is hot... before it was near imperceptible...

 

Yes
(10 chars)

 

Is there a way to use either RMclock or CPUgenie to undervolt but *not* use their power management profiles?

I ask because after many tests, I just get better battery life using the Vista power management profiles and no undervolting than I get with CPUgenie and undervolting. The only positive I get from undervolting is some heat reduction at max load. In an ideal world, I'd use a program just to undervolt at all of the multipliers, then let Vista manage everything else. If I try to use CrystalCPUID, I can set the voltage, but as soon as I change power management profiles in Vista, the voltages go back to stock.

Any help?

 

yes the application should be running for the settings to take effect. starting up with windows is your choice it just makes sure`s that the UV is effective from the starting.you can run the app manually to if you dont want it to start with windows.

 

thanks for replying, it doesn't seem to slow my comp down anyways during
startup.

eh... my T2250 is between 18 and 20 degrees at startup and 33 to 36 degrees when i'm browsing and virus scanning and 55 under load from 73 under load, I should've found out about undervolting earlier because of the HP nVidia card heat issues I had to replace my motherboard but now the GPU can't go over 65 degrees under load and its also taken 5 degrees off of my HDD temps as well!

really can't thank Flipfire enough for the guide.

 

How do you make this run on windows 7???
In advanced cpu settings it wont let me check off IDA option and DFFS

Then it just shows 0-5 and also all the volts on every multiplier are 1.2500V

Is there something wrong? is the program not working? or is it supposed to be that way?

 

what is your processor?

 

intel core 2 duo t5550

 

If you're speaking of RMClock, it runs fine on W7 for me. Same experience as on Vista.

 

under profiles did you click on default? when i did that it changed my voltages

 

^^

I looked at that section of the GUI, and honestly, I don't remember.

I seem to recall just using whatever V values where there, to start off.

Under "Advanced CPU" I did tick "Mobile" (near the bottom) and that changed my default Vs downward approx 100mV (0.1V), FWIW.

Edit - FWIW, I started posting my experiences with post #2484ff

 

Anyone have any ideas? I assume I'm missing something simple, but I can't figure it out.

 

i managed to get 1.0375v for 10x multiplier but i the CPU info it shows the 10x is getting 1.1750v what is this??

 

Yeah you are, RMclock is only supposed to take over the CPU management only on default.

Which Vista Power Plan are you currently using?

Also on your subprofile page, click on OS settings near the top and you will see extra options if you want RMclock to also take over the full system power settings

 

i am using balanced plan.
should i tick the use OS power plan from OS settings?

 

come on flipfire waiting for your reply...........

 

Remember that these are volunteer forums, man. Flipfire's generosity in this thread is nothing short of amazing, but he's obligated to do none of it.

And, I think he may have been responding to my post.

I think I figured out the issue, though I haven't done new tests with battery life. I was thinking that I should be able just to have the program undervolt and then be able to control the power plans via the Vista power icon in the tray. I see now how to make the OS settings the default marks.

All in all, I'm not sure that undervolting is really worth it for a penryn in a t61. I shave off 7 degrees or so at max load, which I suppose is good. And I guess I'll save a buck or two on electricity each year. But the GPU runs 10 degrees hotter than the CPU ever does, so I'm not sure I save anything on fan use, and thus battery life improvement is a wash.

Is there any reason to keep undervolting?

 

i really didn't mean by word...i apolazise if that sounded bad

 

Woah this is pretty coool

 

I have an HP tx2500 with a turion x2 rm-70 cpu and vista 64. I installed rm clock properly along with the vista64 driver but i can't even see the advanced cpu setting tab to click on it! also it just says my cpu is unknown and im not sure what configuration i need my power settings need to be. thanks

 

Hi,
I would like to thank you for this guide.
I own a Gateay p-6860 fx with stock T5550.

I was able to undervolt from 1.25v @ Max Temp of 81-83 degrees Celcius
to 1.00v @ Max Temp of 71-72 degrees Celcius.

This is a huge improvement.
Thanks,

~Hendel

 

I undervolted my Vaio Z 590 using your guide. So far everything looks stable. The usual temperature before reaches 90 C and now it only reaches 79 C at full load. I was monitoring my pc using RM and everything seems stable (meaning everything goes in a straight line). I'm new to this stuff and would just like to know if I did it well enough so as not to hurt the little guy later on.

 

wow, i never seen my CPU at 49c!

G1S-X1 T7300 settings:



hopefully, this will also lead to the GPU and HDD running a little cooler. usually my CPU idles at 57c

nice, thanks!

 

Hey, although I stress tested my cpu for 2 hours and everything was stable.
It is not stable while I play 3d games. I continually crashed to a black screen requiring a hard reboot.

I set the voltages back to default and haven't crashed while gaming. I guess i'll stick with default voltages and invest in a laptop cooler.

Thanks,

 

Would someone know why I can't get IDA to work with my T7250? The laptop is G1Sn and there's no options for it in the bios.
If I enable it in rmclock, all it does is apply the (IDA multiplier) voltage to the normal speed, plus the rmclock cpu load indicator isn't maxing out. I figured it could be a bit buggy but not working at all ? I've ticked all the necessary multiplier boxes.

 

rmclock hasn't been updated in a year. It has support for IDA and it can even set it, but the actual clock speed won't be shown in the monitoring page. I tried running hyperPI wint IDA on/off and got a clear advantage for IDA on.

 

I have noticed that ORTHOS basically stresses two CPUs. Since I have a quad core processor, two of the CPUs remain free while the other at 100%.

Is there any other program to stress the four cores?

 

I didn't run Ortho. I just played Hell's Highway for 45 minutes.

 

I think that in W7, you can run two instances.

If not, just run two heavy games at the same time, setting separate processor affinities for each one in the Task Manager.

 

Thx. Sorry for asking I just find the answer in a previous post.

Thx anyway.

 

Anyone know why my Rmclock would not display the "Advanced CPU Tab"
It lists my processor, etc as unknown, but the notes for RMclock state clearly that it supports it. AMD64 X2 (with cool n' quiet)
I can't adjust any setting at all. It won't display core temp or anything.
I also tried NHC- exact same. Nothing is adjustable and it won't retrieve any info about my processor, etc.
The model is CQ50-103NR (Compaq laptop) Any help greatly appreciated in setting me in the right direction.

Is it because this is a rather new latpop and is just not supported?

Thanks alot.

 

Hi, I have been trying to undervolt and while stress testing I noticed that in HWmonitor my ACPI TZ0_ is the hottest component. Can someone tell me what this component is? I thought ACPI had to do with power management but there is a screen icon in HWmonitor.

 

Not sure what answer you found, but the latest Prime95 (really what Orthos uses) supports multiple threads/cores.

 

Pushing a 65nm AMD Turion 64 TK-57 under 1v, so far so good.

 

It's gotta be the chipset. Mine never goes above 45 C and idles at 32 C.
What are your temps?

 

Hello, all.
I'm quite new in this undervolting thing. Can somebody tell me why RM Clock does not have an advanced page setting when I install it? I'm using Vista Ultimate x64 and my configuration is in my signature. Thanks a lot.

Edit: And one more thing my CPU is QS. IS that the reason?

 

Did RM Clock correctly recognize your CPU?
Are you using RM Clock 2.35?

 

Rm clock doesn't recognize my CPU and yes I'm using latest version, also I've put new RTCore64.sys in RM Clock folder. Just no clue.

 

Hello guys, i need a little help. I have a merom T5800 and I've followed this great guide but at this point i've got same factory voltages for each box, is this normal ??????

 

30 Minute Orthos Stress test:
Max Temps:
ACPI
67 C
49 C
Processor
58 C
56 C
Graphic
54 C
HDD
44 C

The ACPI idles at 41/35 C and everything else is in the 20's.

 

The new AMD cpus arent supported, you can try Crystal CPUID instead.

Thats would be your chipset temps.

Use which ever CPU stress test you have. I only used ORTHOS cause it was simple and straight forward.

Yes most likely because its a new QS processor. Can you see the voltages in the profile page?

Heres what you do:
1)Tick auto-adjust intermediate multiplier box
2)Set the 6x multiplier to the lowest voltage (should be around .900v)
3)Set the 10x multiplier to 1.200v and start testing/lowering the voltage from there. (unless unstable)

Make sure you click Apply to every voltage change.

 

Thanks flipfire and thanks to the man who makes this guide it worked like a charm, i'm now at 1.100V on 10x, more than 10 dégres less !!!!!!!!!!!!

 

@ flipfire
I'm @ work now, when I go home I'll see, but as I remember there is nothing, only the speed of the CPU, wich is not correct also. It always show 2660MHz (266x10).
Do you think that it might be something connected to digital driver signing with Vista x64? Because I can't run Riva Tuner for this reason. But since Riva Tuner is true install software Windows notifies me that it won't work, because of that.
RM Clock is not true install program - it uses WinRar as self extract program to copy files in C:\Program Files.

 

I want to undervolt my new laptop, a Compal JHL90 with Intel Core 2 Duo T8300(2.4GHz), 3GB ram and a 9600M GT running Windows 7. I have a problem with undervolting. CPU-Z shows me a idle voltage at 1.063V (@ 1600MHz) while CPUgenie shows 0.950V at idling (it is strange that CPUgenie says it is idling at 800Mhz while CPU-Z says 1600MHz). Problem is that I don't know who to trust, CPUgenie of CPU-Z. I cannot undervolt now because CPUgenie thinks it is running at 0.950V already (which is the lowest value in CPUgenie).

RMClock also says it is running idle at 800MHz with a voltage at 0.950V. What to do now? i want to undervolt because my GPU gets hot as you probably can see