The "Undervolting" Guide

It seems like Ortho subjects the processor to sustained stresses that I would never really see from another program. While a 0.1 undervolt still makes my THM0 sensor climb quickly past 100C in Ortho, a couple of hours playing GTA4 don't push it higher than mid 80's (and the core sensors are lower still).

I might be able to push the voltage lower still but for now I'm content that I'm at least not melting my chip through everyday usage. I'll try crystalcpuid anyway, thanks for the headsup.

 

Here's some new results for my new CPU (a T7600 @ 1.1625v standard).


T7600 SL9SD 2.33GHz 4MB:

6.0x up to 10.0x @ 0.95v
11x @ 1.0v
12x @ 1.0125v
13x @ 1.0375v
14x @ 1.0625v

So it could only handle a 0.1v decrease at the max multiplier But it dropped the temps pretty good and that's the most important

 

I've noticed that mine uses either max or min speeds most of the time .. and almost no middle ones

I did like .125 lower at max speed and it dropped temps about .. uhh .. 10 - 12 degrees

 

Well, I don't think games use the CPU too much, they mainly use the graphics chip. Try a virus scan or something.

 

GTA4 is more CPU-intensive than most. Recommended specs are a quad core, and I haven't seen anyone other than quadcore users get more than 50fps. Both GTA4 and a Kaspersky full scan give my THM0 sensor a max temp of mid 80's (with GTA pushing it slightly higher). I really don't have anything that can touch Ortho in terms of CPU torture, apart from maybe video encoding software.

 

Intels Thermal Analysis Tool (TAT) can generally get them a degree or two hotter on desktops, I didn't run it very long on my laptop to compare it to Orthos but generally it's the absolute heaviest load you can get for an Intel CPU.

 

Sorry if this has been asked in a previous post, but I don't have nearly enough time to go through 221 pages of posts...

I wanted to undervolt my M1330, but should i being doing the stress tests and this entire process under Power Saver setting or High Performance, so that regardless of which mode I use I won't run into any problems. I'm guessing High Performance?

 

Under High Performance, select the highest multiplier, you'll see the RMClock sign go red in the systray, run Orthos.

(You can lower the voltage for the highest multiplier gradually while running Orthos)

 

Is there a way to completely reset voltages? I am still stuck with 10x as my highest multiplier, when it was 11x before BSOD. Correct me if I'm wrong, but doesn't that mean the CPU is not being used to its full potential when it needs to?

 

You can run the file "RMClock_WipeOut.reg" in the RMClock program folder.

Doesn't the T7250 have a max multiplier of 10x ?

 

I'm undervolting my Gateway M-6850FX right now (T5550) and wow. I've gone from 1.2375 to 1.0375 and I'm still UVing. Temps have dropped to around 60c.

 

I've tried running the reg file, no luck. I would think that it had a max multiplier of 10x, but the first time I undervolted there was a 11x, which I have seen no sign of since first BSoD. After DLing the latest version of RMclock, 11x has been showing up in the form of IDE.

 

In the form of IDA.

And the T7250 has a max multiplier of 10x.

The reg file resets everything to stock. Whatever you saw the first time, might be a glitch.

If RMClock gives trouble, you can try undervolting using CrystalCPUID.

 

The multiplier works out at 0.2Ghz for each step. Therefore, your 2.0Ghz CPU will have a limit of 10x multiplier. Your 11x multiplier may have existed in the form of the IDA, but you won't need this anyway so just untick and forget about it

 

Ended up getting my 6850 to .95v, the lowest RMClock would go.

 

Can someone tell me if im on the right track with undervolting?
I have a T9400 @2.53GHz with a max multiplier of 9x. So far i have been able to undervolt it to .9500v which is the lowest option available and also this is the same voltage for my min multiplier, 6x.

For some reason to me this does not seem right. i read another post which had the same processor get down to a stable voltage of .9875v and im down to the lowest possible.

Also in rmclock my core clock is 2526MHz and the throttled is 2393MHz....this is due to rm clock not recognizing half multipliers or whatever...yeh?

thanks in advanced

 

That's fine. All CPUs undervolt differently, even if they are exactly the same model. Mine is also stable at 0.9500V at the highest multiplier.

And yeah, RMClock doesn't recognise half-multipliers, so you lose 133MHz.

 

ok thanks for the quick reply btw.

is there a way to get the voltage even lower? because rmclock bottoms out at .9500

also since .9500v is the lowest voltage possible and the max multiplier runs stable on this voltage. would it be safe to assume that the lower multipliers will run perfectly on this voltage level aswell?

 

In the RMClock program folder, checkout "RMClock_Tweaks.reg" - open it in notepad, and see how to apply the UnlockVid tweak.

Though the lower VIDs might not be applicable.

 

Now that i have undervolted my lappy does that mean that i can do away with the battery profiles that came with my system (eg power saver, high performance etc..) as in rmclock the profile selected is performance on demand? so does rmclock override the battery profile settings i have? so like say i do something cpu intensive then does rmclock let my cpu use the highest multiplier even though it may be on the powersaver profile which means that it shouldnt be able to use the highest? (If that makes any sense)

 

Hi ..
Is the RMClock auto activated each time i restart my PC? I don't see the Icon at my taskbar or izzit this RMClock working background?

 

Look this:

 

mine is t9400 as well, and i got it to .9500 as well for 9x. but i get to undervolt to .900 for 7x and 6x. lucky me! neways, dont worry about it


HOLY CRAP!!1 i just did the tweek and unlocked the vid. my min was .9, now i can go to .7125!!!! i will do the undervolting later... but this is awesome!!

 

An average temperature of 47/48 C. is ok or is too high ?

 

So far I've undervolted my 11x multiplier from 1.1500 ===> 1.1000. Temp now whilst browsing is averagly 38C. What is considered to be too low?

 

There's not really a too low as long as it passes a stability test like orthos.

 

Hi, I've been having a problem with RM Clock.

I've been happily using it for the last 6 months to undervolt my processors. Recently, however, I reformatted to Vista 64 bit to take full advantage of my 4GB of ram and since then RM Clock has forgotten all settings every I open and close the program.

At first I didn't notice it because I tend to hibernate a lot. However I've discovered that everytime the progrom closes, whether because of a system restart or just me manually closing it.. all the settings get erased and the factory settings reappear.

Before it closes, it appears to be working perfectly, it modifies all the voltages I specified

I also made sure to install the signed driver as indicated in the direction at the start of this thread.

Any ideas?

 

How do i apply the UnlockVid tweak??

 

Open RMClock_Tweaks.reg in notepad, in the RMClock program folder, and create the new value in the particular key as mentioned.

 

This sounds like an interesting idea, but I have a couple of questions. First, I would like to do this without losing 100 MHz of my T9300. I've seen CrystalCPUID mentioned a couple of times in this thread, but has anyone actually tried it?

The second question is exclusive to my laptop. As far as I can tell, the GPU and CPU of the Compal JFL92 share the same fan. As things currently stand, it appears to be triggered by high temperatures of the CPU rather than the GPU. Does anyone know if lowering the CPU temps has chance of messing up the GPU because the fan doesn't turn on in time? If not, I suppose there is no way to find out except to try...

 

I use CrystalCPUID. You can select half-multipliers in it. (Function > Speedstep Control)

Even if the CPU and GPU share the same heatsink and fan, both play a role in the fan algorithm. (The Fan table will be based on both the modules)

 

Thanks. I'll give it a try.

 

What do you mean by this?

 

If you open that .reg file he mentioned it has a bunch of comments in it that explain what each value does. There's two (i dont have my RMclock enabled laptop handy to check the exact wording) but it basically says "enableallfid=000000x0" and "enableallmultiplier=00000x0" or something to that effect in two fields, to enable those choices you change the last 0 to a 1 per the comments inside the .reg file and then save it and double click it to install it into the registry.

 

I've been following this thread for a while now, and have been waiting to undervolt my T61 w/t9300 chipset mostly because of time, but also because RMclock doesn't do half-multipliers. I saw a few pages back that you were toying with the idea of writing up a guide for CrystalCPUID -- does using it involve significantly different steps than with RMclock? You'd recommend the program highly?

 

Run > Regedit > HKEY_CURRENT_USER\Software\RightMark\RMClock > Create a new DWORD value UnlockVid (= 0).

Yeah, I'm pretty happy with CCPUID. I can't use RMClock when my CPU is overclocked, 'cause it crashes my system in a couple of 5 mins. CCPUID is fine. Its just an .exe file, and I don't think it creates any registry keys. The only downside to CCPUID is the voltage-selection menu shows desktop type voltages.

I uploaded a couple of screenshots of how to use CCPUID a few pages back.

 

I just got my new laptop and am running Vista 64 bit on it. I went to the bottom of the page to download the 64bit version, but it was compressed into a sys form. I dont have the right driver to open up the folder, how do I get the RM clock 64 to work? Do i have to download a driver to uncompress it?

 

Download that driver (.sys), and paste (& overwrite the original sys) it in the RMClock program folder.

 

1) You mean post #2159? And then, what does "desktop type voltages" mean for a laptop undervolt?

2) And then, after I figure out the proper stable voltages, I would just put the .exe file in my startup folder to keep my computer undervolted all the time?

3) And one more, if I ever wanted to overclock my GPU, I would either have to exit CCPUID (and reboot?) or rerun the stress tests to find the proper stable voltages when my GPU is overclocked?

Thanks so much for the info, man. I really appreciate it.

 

1) Yeah. Desktop type like in the sense, if you select 1.1750V the actual voltage will be 1.0625V, so the change is kinda proportional. You can use CoreTemp or CPU-Z v1.41 to monitor the voltage change.

2) I haven't tried playing with the startup thing. By doing this, I think only the UI will load, but you'll have to apply the lower voltage manually.

3) I dunno what CPU voltage would have to do with the GPU OC. But you can re-apply the highest/stock voltage via CCPUID.

 

Hmm. Sounds like if I want to use the undervolted settings as my standard operating settings, I should still use RMClock. And then, if for some reason I decide I need that extra .1GHZ at the top end, I should just shut down RMClock temporarily to get it??

 

Just forayed into this undervolting business tonight.

Seems you'll have to shut down RMClock and fully reboot to restore the extra .133mhz and gain your extra 0.5 multiplier back. If there's a quicker way, by all means -- someone please share.

- F

 

with the T9300, if you enable the IDA multiplier in the profile tab, it runs the cpu at its full 12.5x multiplier. if you want to gain your 12.5x multiplier but disable actually using IDA, go to the advanced cpu settings and then uncheck the box that says 'engage Intel Dynamic Acceleration' and hit apply...only downfall of this is that you have to keep doing it every time you reboot your computer/restart RMclock.

 

I thought that the idea of IDA was that it uses just one core, so regardless you're still taking a performance hit. (But I have to admit, I still only understand about 40% of this stuff...)

 

correct about IDA only using 1 core. but i was referring to actually using the IDA multiplier so you are running your cpu at full speed. once you enable the IDA multiplier in the profiles tab, go to your 'advanced cpu settings' tab and uncheck the box that says 'engage Intel Dynamic Acceleration' and your cpu will run at the full 2.5ghz without ever using IDA.

with the IDA multiplier in the profiles tab enabled, it tricks RMclock into thinking that there is a 13x multiplier, but really just enables your 12.5x multiplier.

 

Well so far so good!
At first i had my doubts about if this would work out as planned or if i would just manage to break another one of my laptops somehow
I started out with all set to 1.1375V now after several hours of ORTHOS playing with my computer i got it down to 0.9500V on all multipliers and its been runnig stable at max load for just about 2 hours.

When i started out i ran it for 15 min on 1.1375V on 12.0x multi and core temps hit 73C, this was after i had been watched movies and on msn for like 5 hours. Then i had to leave for a few hours so i shut the comp off and when i got back i ran it for 45min on 1.1375V and it hit 68C. Now when im running it at 0.9500V it hit 51C on Core1 and 50C on core2.
I can just say i am truly amazed!!!
When i woke up this morning at 4am i never would a guessed my computer would run 22C cooler than normal :S
Thanks for a great guide!

Does any1 have any ideas why the 2 standard 1.1375V tests gave 73C 1st time and 67C 2nd? Room temp was about 20C all day and hasn't been sunny today. Just curious
1st post on the

Maybe you it should say can lower your temps by 5-22C

 

Hey, my CPUs been running at like 60-70% ever since I lowered my voltages. What could be causing this, and is it bad for my laptop?

 

Thanks for this guide.

Got my laptop for christmas + 18th all rolled into one. Had a T5750, was running at about 60 degrees full wack and over the course of a day it idles at about 28 degrees and reaches a high of 44 degrees thats a massive 16 degrees cooler, and to think I was going to purchase a laptop cooler, I see little point now though with these temps.

 

sorry i know this had been answered before but i dont have time to go look through all these pages but. what am i suppose to do when at start up instead of "high performance" it says "RMClock Power Management" thanks!

 

Thus far, I have managed to make CrystalCPUID crash my computer to the point of me having to power cycle it 5 time, so I'm probably doing something wrong. I was following the instructions in this post:

Problem is, I don't see a way to set the voltage and for a particular multiplier. If I change the multiplier to a higher one first, it crashes because the voltage is too low. I can change the voltage first, but then isn't the lower multiplier stuck with the higher voltage? Also, I'm not sure it's actually changing the voltage at all because whenever I set the multiplier to 12.5, it crashes (I tried with the voltage at 1.325 which is the maximum).