The "Undervolting" Guide

yall got it both right....showng correct voltages and throttling right now...thanks so much....my computer has never ran so cool!

 

ok so i lied...im still only running at 800mhz...and my browser is running a little slow (I always have a bazillion tabs open)

still trying to understand all this...but is there a way to have it run at the 2GHz and still keep the low voltage or is it a trade off? I would prefer it to always run at full "speed" as its always plugged in and very rarely used on battery. how would I go about having it NOT throttle that aspect but still keep the low voltages...is that possible? I honestly dont know exactly what im talking about so if i sound stupid...its because i am...haha

 

There should be 0 performance loss while still keeping the voltage. You just missed something in the guide.

Go to the Performance on Demand subprofile page, make sure all the boxes are ticked

Double check the guide if you missed anything. Im very sure you did.

 

hmm thats odd then because im showing my CPU Clock as 797mhz and my CPU Throttle as 359. Its a 2GHz laptop...and when i first started with the program they were showing 2GHz...I will go back and look again

 

i got it! its throttling awesome now...no more lag....i tried as it said in the guide to set it to lock at max but i bsod so i think i need to adjust some settings...but using throttling it seems ok...but like i said...need to adjust settings before i put a heavy load on it again

last question....it IS ok for the computer to do the throttling? It seems like its going back and forth a lot...everytime i click a new website or load a new folder it jumps tofull speed and then back down....this wont hurt anything in th long run?

 

Yes, its normal for notebook cpus to throttle up and down erratically. Thats how they run normally, the only thing undervolting changes is the voltage they run at.

 

As I said a few pages back I read through a good few pages and I can't find the answer. My processor is a p8400. It won't let me check Intel Dynamic Acceleration(IDA). This is right after I DL'd it. Could it be the CPU info? It doesn't specify it is a p8400...just an Intel Core 2 Duo. I am a n00b and tired so hopefully I got this all right...

 

yeh that solved it thank's alot.

any one have any idea why I can get lower voltages (physically) when on the 'mobile option' as opposed to the desktop option.

i.e. I am now stable 12* at 1.05v where as desktop mode wasnt stable at anything below 1.1625?

 

The "drill" is actually really simple. CPU's do need a little extra voltage to run at higher speeds but at idle load don't pull hardly any extra amps of current flow. Here's what to do: Pick a speed, and keep dropping the voltage until it fails with Orthos or whatever. Each CPU speed has a minimum voltage all it's own. Now, as Ron Popeil says: Set it and forget it!

 

Here's an odd thing that keeps happening. I wonder if someone could shed some light as to why and a possible solution. So, after following the excellent undervolting guide and am proud to see temps on my 6862 (T5750) drop from:

Stock:
Idle - 46C
Stress - 77C (Orthos 2 hr)

Undervolted:
Idle - 28-32C
Stress - 62 (Othos 2 hr)

Now I'll put the lappy to Sleep and whenever it awakes the idle temp rises to 45C. It will then run at this higher temp. until it is rebooted. Each time the reboot will again drop the Idle temp to the undervolted 28 -32C. When I check the undervolting values, they are the same after recovering from sleep as before. FYI, 12x = 1.025, 11x - 6x = 0.950. Anyone else having this temp spike after recovering from Sleep? Solutions?

Thanks for the input all.

 

Has anyone tried on W7?

My temps are a lot lower running W7 then Vista. So, I wanted to see if Undervolting would drop them further, With a few tests, It doesn't seem to have a effect. Also, RMclock wont show up in the programs list to uninstall.

My temps are around what Vista is with RMclock though. W7 is awesome.

 

I'm getting two weird things.

1. I can't lower my voltage below .9v. I have all multipliers at .9v with no bsod.

2. I run the stress test and get different results each time. 70c original, then down to 49c some times and 58c some times.

Vista 32 bit on xps 1530 t8100 processor.

 

SandManiac,

Yes, I have it on a full blown install of W7. It's working fine, and it drops temps a little bit faster than my Vista x64.

G'Luck if ya try,
Ali

 

hey guys, whats up! well, i finally got to undervolt my t5800 from 1.25v to 1.00 volts. now my load temps are 58 instead of 77, which is quite awesome. however one problem, i know my processor can idle at 800mhz, but in windows it keeps idleing at 1.2ghz. ive seen it at 800mhz for like 1-2 seconds, but thats it.
cause i dual boot with arch, i keep my processor at 800mhz all the time, and sometimes i put it to ondemand.

but is there anyway to make it idle at 800 or keep it at 800mhz in windows?

thanks.

 

Yes I have it running perfectly on W7 32bit.

_Nate

 

Not sure why but make sure it is running on the highest multiplier when doing the stress test. Sounds like it locked on a lower multiplier.

Yes lock it to the lowest multiplier, see the guide again for how to lock it to a certain speed. Be aware that it will run very slow if you keep it at idle speed in gain for more battery life.

My RMclock profile is set so that it runs on 1.2ghz on battery and automatically switches to on demand 2.2ghz when plugged in on AC.

Thanks for the news, glad it works for W7

 

hey flipfire, yes. i did lock it to the lowest multi which is 6x. i intentionally did that, and it runs at 1.2ghz all the time. the only time ive seen it at 800mhz was for brief periods like 1-2 seconds long. when it did happen. i saw the multi goto 8x, which is odd. i then locked it to 8x, but that made it run faster. im just unsure why i cant make it idle at 800mhz. the multi's i can select are 6x-10x.

 

Can you see a SuperLFM option in your profiles list?

Super low frequency mode cuts your FSB in half.. so your rated FSB is say 200mhz, so cut that in half

100mhz x 8 = 800mhz

The default without superlfm is 200mhz x 6 = 1.2ghz

Mine is set to SLFM x6 giving me an idle of 600mhz.

 

nope i dont see SuperLFM as an option at all.

 

Does RMClock support half multipliers yet?

Greg

 

Nope, it doesn't.

 

Have not been watching this thread for some time. However, have been running Windows 7 x64 for 10 days now on a Dell XPS M1530 T9500 4GB ram, WD Black Scorpion 7200rm HDD with 16mb cache, and the new nVidia driver (which was a recommended update as soon as I installed this OS).
But found it running warmer than I would like, yet that is the nature of not only the construction of this rig, but the layout of the hardware ie HDD directly below the left hand.
Anyway, back to the point! Have installed RMclock, imported the x64 dll, and have the GPU temp down from 65c to 53, core 0 @40.3c & core 1 @38.6c. HDD temp @37c.
Could not, for some reason save profiles, so I spent AUD32.50 on the pro subscription. Hey, it's worth it. the original poster & contributors who have pointed me in the right direction warrant some sort of contribution to the authors' of Rightmark.
Again I must stress, I am using Windows 7, and what an absolute delight it is.

 

The pro and update modules dont do anything as it is outdated anyway. You should have asked here first mate!

I will try solve this issue with you. Past users reported that it works fine on W7. So when you mean its not saving, it reverts back to default settings when you restart?

Are you on an administrator account?

 

Flipfire - can you provide an answer or insight to my dilema? I posted this on Monday and either no one has advise to give or it was overlooked (or it's too obvious a solution need not be asked). The issue is simply that after waking the laptop (see sig) from sleep it idles 10 - 14C higher (approx. 42C). The same is true if I stress it. Temps are as seen by both RMClock monitor and HW Monitor. A restart of RMClock doesn't correct it only a reboot. Any suggestions?

Thanks

 

Hi sorry for the late reply

Its a gateway specific glitch. Its happened to gateway users in the past. I believe there was something wrong with the temps it shows. It doesnt really idle on 28-32c.

Which temp monitoring programs are you using? I suggest you try coretemp aswell.

 

Thanks Andy. Does anyone possibly know what a P8400 would get downclocked to? 2.1Ghz?

Greg

 

P8400

266 x 8 = 2128mhz

266 x 8.5 = 2.261mhz

 

Is it worth undervolting the desktop processor in my C90S? Presently 1.188V on speedstep at 1.6 ghz and 1.350V at stock 2.4 ghz (same voltage when applying turbo gear OC up to 2.76ghz)

 

Hi Flip. I've got a problem. I followed this guide to the exact word, and I cannot get anything above 1.20Ghz. Ever.

This is very frustrating, as I have a X9000 and the whole purpose behind this processor is to overclock! Right now, according to BIOS, I've got the processor running at 3.4Ghz, (the max) RMClock is Red down in my corner, indicating that I've got it maxed out in performance, it's plugged in, and it's still reading 1.20Ghz or below! This is frustrating me, as when I set the X9000 back to it's non-overclocked level, (2.8Ghz) it seems to hover at 1.20 Ghz as well- my multipliers go up to 14 at the lowest setting, and 17 in the maximal bracket on overclocking in the RMClock page, but this processor seems to be ALWAYS locked to 6.0X.

I'd just like to be able to use the full power of this computer and not have to keep my processor on the lowest settings to actually be able to play games!

2.8 Seems to give the best performance with my computer, and the Dell guys in the M1730 Forums recommended that I underclock, since Dell sets the voltage limit absurdly high, and that the lower voltage might help my problem- but now it just seems to be showing me I've been locked down at 1.20Ghz forever.

Funny, though, that the only 2 programs that seem to see the processor as overclocked are Windows Hardware and Orthos- they both report the correct 3390Mhz.

Any help would be appreciated, and once I get my ultra-portable, you can guarantee I'll be using this excellent guide to underclock my P8400! Thanks in advance!

 

Great guide Flipfire but I have a problem. HWMonitor, CPU-Z and RMClock all display the one set of temperatures and never change. My 1st Core i always at 12 degrees and my second 19. How do I correctly detect my temperature?

 

Can you show a screenshot of your main profile and sub profile page?

Weird, have you tried Coretemp?

 

These should be what you asked for- if not, let me know.

As you can see, even in the lower right, Red icon, and still 1.2, hope you can help!

 

Hey flip, wicked guide man!!! It is pretty dam detailed. THOUGH, I just have a couple questions.

"T8100/T9300/P7350/P8400/P9500 will underclock by 100mhz~"

So let's say if I have a P8400 2.26 GHz and I undervolt it, and I undervolt all of the multipliers not just the highest one. All of that, is just going to down clock my CPU by 100mhz roughly right..even though I undervolted the rest of the multipliers? I just wanted to make sure that what you meant is that, you lose roughly 100mhz if you do all the multipliers and not when you just do the highest one.

And I was also wondering...when I do get the BSOD, how do I get back to windows? Is there a setting that I have to change so that when I get the BSOD it doesn't keep restarting my computer?


Thanks again for the insight.

 

Have you tried using the performance on demand profile? Also are you running any other power management programs?

It just means your CPU wont reach its peak clock. The P8400 has a 8.5x multiplier but RMclock will recognize it as 8x. The other multipliers cannot affect this.

266 x 8.5 = 2261mhz
266 x 8 = 2128mhz
266 x 7 = 1862mhz

So on and on...

When you get a BSOD, it will just restart normally and give you a report when logging in. The voltage settings will revert to the ones before it crashed.

You can just enter safe mode and clear the settings anyway

 

No other power management, everything is set to maximum settings. At first, I was using your Performance on Demand, but still 1.2Ghz.
Any idea at all? I'm really bummed out right now...

 

Thats weird, it works fine for other m1730 users. I think a similar issue has happened in the past, i just cant remember..

Try the following:
-Close RMclock
-Go to the RMclock folder and run RMwipeout.reg to flush the settings
-Follow the guide from start again

 

Will do, thanks.

I really appreciate your guide, and your help!

 

Oh ok, but I don't have to enter safe mode if I don't want to right? I can just let it load up and revert to the voltages before the crash. And just keep on going from there.

I'm thinking I would only enter safe mode if for instance it wasn't loading up or something. Or is it ok to go into safe mode too and do the trial and error stability testing?

 

Flip-
Upon using RMWipeout.reg, the computer continued to operate at the lowest possible levels;
1.2Ghz, the lowest possible speed as specified by the BIOS.
Using Wipeout then restarting, I have managed to get the system to identify the chips natural speed; 2.8Ghz. Will try the other 2 levels of overclocking to see if I can identify and pin down the issue.
(X9000's support 2.8, 3.0, 3.2, and 3.4)
Thanks.

 

No worries. Ill look into this, you just keep on trying different settings for now.

No you dont, safe mode is just the fail safe way to undo the RMclock changes.

Its best you do the stability testing on normal mode as safe mode runs software/driver on the bare minimum and the testing wont be accurate.

 

Ive had my laptop undervolted for a couple of months now without an issue but just recently ive noticed that the rmclock icon down in the taskbar is stuck on the max multiplier and wont change even when i leave it idle. ive got the profile set to performance on demand so if dont touch my laptop then it should move on down to the lowest multiplier yeh? if this is the case then this is not happening. ive checked to see if its my virus scanner running in the background or if windows updater is running but none of them seem to be running so i have no clue why rmclock has the multiplier stuck on the highest. also since i undervolted months ago i havent touched any of the settings.

 

Under the PoD tab (should be on the left), make sure that you have selected all the multipliers that you want to use. I could be wrong but I believe it only checks the highest multiplier by default.

 

Check how much CPU load you have at the moment. Monitor it for a minute or two.

If the CPU load is low, check your RMclock profile pages. Make sure the performance on demand is chosen on the drop down boxes in the main profile page. Then check the Performance on Demand sub-profile page and make sure the multiplier boxes are ticked for both AC and battery

Do you have any other power management programs running?

Also try running it on battery to see if it downclocks.

If all else fails, close RMclock, go to the RMclock folder and run RMwipeout.reg and start from scratch.

 

I did as you suggested and its still running at the highest multiplier, even after starting from scratch. My cpu load at the moment is ranging from 50-65% and this is with firefox open and rmclock open (seems a bit high??). i dont use any other power management programs. ive doubled checked to make sure all the settings are as they should be; as shown in the first post of this thread.

 

Thanks for this thread

So far I have been able to undervolt my T9400 2.53GHz from 1.1375v to 1.000v and it seems to be stable; I've been running Orthos for over an hour without any lockups/BSODs.

*update* 0.9500v now for a few hours with no problems

I tried 0.9250v, but that halts with the quote below, testing 0.9375v now.

0.9375v is stable after an hour of Orthos, but I'll keep it on 0.9500v.

Final temperature results:

My idle temp went from 30C to 17C.
My max temp went from 66C to 45C.

Huzzah

 

So Flip, I've got a problem a 3.0 and 3.4 (lol?) but 2.8 and 3.2 work correctly. It seems incredibly... random...

Any ideas?

 

hello flipfire , i tryed the steps you posted , but i cant perform the 1st step,b/c i cant update RMc b/c registry is needed.
i have AMD turion 64x2 ATI radeon x1200

i performed some of the steps above and they had my machine running worser,and made some of the games freeze due to fps drop.

when im playing games my frame rate drops consciously and cpu usage comes up to 100% FOR 10-15 seconds , after that it wents smooth for about 2 min, then it repeats again and etc. i really dont know what to doo.
could you be so kind and help me with this prob.


this is my monitoring during the gameplay
lineage 2



warcraft 3

 

Here is an SS of mine running Windows 7 Beta whilst pursing this page.

 

im running W7 and it works...but i have one question i have a t5450 and the lowest voltage i can pick is .9500v ( i set all my multiplier on this voltage and stable) but why cant i chose a lower voltage?

also does the T5450 have IDA? since Rmclock says it doesnt have it.

 

Im thinking its a multiplier glitch, I cant seem to find anything else. Try posting in the gateway or xps section where they have lots of x9000 users that can help you out.

Have you tried using desktop mode in RMclock? (just a long shot)

Your temperatures are kinda high, could be downclocking.

Thats the lowest Intel locked the voltage too. Only T7xxx series and higher had IDA if i recall correctly.