The "Undervolting" Guide

It's normal that RMclock shows 800MHz and CPU-Z shows 1.6GHz. For example, I've SuperLFM enabled and RMclock shows 600MHz @ 0.9000V idle clock speed, but CPU-Z shows 1.2GHz @ 1.013V instead. The RMclock monitor is pretty accurate in my experience, CPU-Z cannot show the real undervolted numbers.

 

on XP

profile NM
jumpy
1.2-2.2GHz
CPU load 70-125%
OS load 100%
6-11x

profile POD
after 2min jumpy

 

I've tried searching the RM forum, I think some people are having similar issue as yours. There is another one that's a little different, his Penryn CPU will get into throttling mode and will not get out of it. Maybe there is a conflict between RMclock and certain power management software, or there is a bug in RMclock for Penryn CPUs?

 

This guide is amazing. I dropped my max temp to around 60 degrees! I'm running a 2.2GHz C2D and my 11x voltage is at 1.0250. My 6 and 7x are at .8500!

I have a question though. Does SuperLFM really do anything if I cant set the multiplier lower than 6?

 

Flipfire, if i had done this setting and i would like to undo this, what can i do?

 

I seem to be having problems using RMClock. I realized that no matter how high or low I set the value, the screen will turn white. And, all the icons on my desktop and even the taskbar will go array. I can click on ORTHOS, RMClock or HWMonitor. But once my mouse move to other areas, the whiteness will result. Then, I've no choice but to hard reset it.

Even when I set it to the default values (8x 0.85, 6x 0.85, 7x 0.95, 8x 1.05, 9x 1.15, 10x 1.25, 11x 1.3), the whiteness occur. And, checking 'auto-adjust intermediate states VIDs' does not change any of the values in between.

I'm running a T7300 2GHz processor. Can anyone help?

 

I have followed flipfire's step to do this setting. And I found that my max CPU hertz that it's run is <1999 MHz instead of <2100 MHz before. (I'm using T8100 2.1GHz)

 

have you tried uninstalling orthos and see if it causes the problem still?

 

Have you ticked ALL the multipliers?

 

I did not uninstall it. But I've ran ORTHOS without running RMClock, after 1 hour, no problem arose at all. No whiteness, no taskbar prob... I have even tried running RMClock alone without ORTHOS. After surfing for 30 mins or so, the screen turned white again.

So, I guess orthos is not causing the prob.

Btw, do I have to check index 0 - 5 in RMClock or only index 1-5 when testing index 5?

 

Sorry, where to change the multipliers and try? I'm not clear with it because my poor english, sorry.

 

zinwei, i forgot the penryn T8100 has a half-multiplier. Rmclock can only read whole multipliers thus causing it to max out at 2ghz

Heres what you do to enable 2.1ghz:
1) Go to Advanced CPU options > Untick "Engage Intel Dynamic Acceleration" > Apply
2) On the main profile page and subprofile page, tick the IDA multiplier and index > Apply

2.1ghz should now be active.

If you still want to completely remove RMclock:
1) Go to the rmclock folder and run RMwipeout.reg to flush the settings
2) Delete the RMclock folder.

 

Has anyone figured out how to allow RMCLOCK to load @ startup without having UAC bug you each time?

For me, I just disabled UAC because of this, but i am wondering if there is a way to get around UAC for this one program without having to disable UAC globablly.

 

The changes you make in RM do not take effect without it up right? I decided to delete it. Also, are CPU temps supposed to drop so slow?

 

i posted a way to do this in one of my previous post here.

 

here i found it!

 

Thanks for your guide, I'll try again.

 

Flipfire, the CPU core and Revision are filled up with 'Unknown' in the CPU info, is it normal?
And the CPU temp in RMclock isn't show the same temp as CPU temp in HWmonitor.
One more thing, I saw your screenshot that's your Core clock and Throttle are running at close amount when pulling CPU to stress mode, but mine wasn't like that, it just be a big different like core clock run at 2094Mhz something and throttle run at 1994MHz something, it has at most 100MHz different.
Is it because of this program doesn't support penryn yet?

 

flipfire, I have followed your step and tick IDA in both profile and sub profile.

I push CPU on stress mode and I found that my current is run at multiplier 10x with 1.1375V(this display in index 5 normal) and isn't multiplier 11x with 1.2125V(this display in index 6 IDA).

If I have lower the voltage of multiplier 10x and it's lower than multiplier 9x. Example, 10x with 1.1V and 9x with 1.1375V. Is it suitable with this voltage which is lower than previous multiplier? or I have to lower the voltage of multiplier 9x too?

 

I attempted to under-volt using the great guide flip has up but i run into this weird issue that when i apply my profile the multiplier will lock at the lower state (6.0x in my case) and will not increase even when i run orthos leaving me with 1.2 GHz clock speed all the time when RM is running, it seems to get stuck on the lowest one. I also tried returning it to stock voltage no effect, using maximal performance profile with the highest one, no effect.

Any help would be greatly appreciated,

Sage

 

quick edit im trying to undervolt when its oced to 3.0GHz if that helps anybody

 

Seems like the profile you selected only has the lowest multiplier selected.
PS. I'll PM a mod to join this with the UVing thread.

 

Greetings!
I tried to use RMClock to undervolt my notebook CPU, but it doesnt seem to work. Unfortunately it seems that Rightmark does not see my Voltage right At least it writes 1.1500V for x13 multiplier and CPU-Z writes 1.263V for the same multiplier.
I have an Intel Core 2 Duo T9500 (ES) CPU (as you can see here in the CPU-Z).
Any chance for a fix maybe? (Or any other idea?)
My current avg CPU temp during games is ~70c.

 

What seems to be the problem? Is it that the voltages don't match up? Since that's a known (though I'm not sure if it's fixed) bug, use an older version, 5-6 revisions to be sure since those detect properly.

If your problem is that the voltages are too high, make sure you selected the mobile CPU option and NOT the desktop CPU one (in the advanced settings tab IIRC).

PS. It doesn't seem like you're running RMClock in that pic. RMClock needs to be open in order for it to adjust voltages.

PPS. Angry Beavers was awesome. I remember that show from probably about 10 years ago.

 

1) Latest CPU-z doesnt detect the correct voltages, it shows up as desktop voltages. I clearly noted this on the guide somewhere. You will need to use version 1.41 to show correct voltages for notebooks

2) Voltage changes will only be active with RMclock on

 

Did you check on subprofile there?

 

1st off. big ups to flipfire on this guide, good job mate!

I have been under volting my work laptop for the past few days with good results. So far I have my 12x down to 1.05v from 1.2625. Of course my laptop is cooler and getting better battery performance. I am still tuning and looking for a little more though.

One thing I did notice is that when I started my first test my CPU clock and throttle were right at 1.999 or 2 ghz, I have a 2ghz DC. As I went on they have come down marginally to 1.994 each. No noticeable difference compared to the temps but I though it was interesting.

 

Hi guys.Thanks for the useful thread, haven't head time to read all the pages. Question:
Do you recommend leaving the RMclock undervolting , Speedstep and SuperLFM doing their job even when gaming? - Does it lead to hiccups, compared to full throttle? (I am thinking of gaming on AC power)

 

The laptop should perform exactly as before..I don't notice any kind of performance loss when RMclock is running. I think you should try it yourself, and see how it goes with your laptop though. Almost 100% sure, there will be no "hiccups" . If you notice any kind of performance loss it will be minor..

 

Awesome guide... I think this guide is as valuable to the notebook community as the Vista clean instal guide from Stallen.

I have a T60P with a T7200. Factory setting, 12x multiplier was at VID: 1.2625.

I managed to lower the VID all the way to .9750, but that caused a BSOD within 5 minutes of the stress test.

I increased the VID to .9875, and within 3 days of using this at this voltage, I recieved another BSOD. However, I noticed that this BSOD did not occur when the CPU load was at 100% (or running at 12x). I am guessing that the BSOD occured because the CPU was running at an "intermediate state" factors, and I recall that these intermediate factors are the most sensitive to BSODs.

Now I am going to try to set my max VID to .9875 again and manually set all the intermediate states to .9875. Hopefully everything will be dandy.

Also another point about my Thinkpad, everytime I play a game (even World of Warcraft), I get these video driver errors that pop up. The error says something like [paraphrasing]"video driver failed but has fully recovered." This flickers the screen for a few seconds and is very annoying. Ive also noticed that this error is correlated to the heat of the system: this error only occurs when the Thinkpad gets VERY hot.

I wanna point out that ever since using this guide, this video driver error has never occured. In my opinion, this guide is the fix to that thinkpad t60p gaming heat problem. Pass the word!

 

hey sorry ive been working have not been around but i was using the power on demand profile, all multypliers were checked in i followed that Guide to the letter, but it just Stuck on 6.0 i even used the max perfomance one with 15.0 checked only its strange it just like when i try to use a profile it defaults to the lowest multiplier and sticks.

 

If by subprofile you mean the Maximal performance ETC yeah those are all set correctly

 

It wouldnt hurt to bump it up to 1.000v to ensure its rock stable

The BSOD's are most likely comming from your intermediate multipliers. It usually happens when running AV or spyware programs which uses those middle multipleirs.

Is this with the OC multipliers turn off?

 

no all my multipliers are checked in 6-15 when its oced to 3.0, also they are all "normal"

 

In a nutshell, is this good to do? I read the first few pages, and then stopped.

I want to reduce whinge noise/fan activity... keep temps low ofcourse.

Thinking of going with a cool paid though.

 

I think its worth doing for everyone, IMO.

It has no negative effects on your computer whatsoever, so long as you follow the guide.

The main advantage of this procedure is to dramatically (at least for me) reduce the running temperature on your laptop, thus prolonging laptop life, reducing risk of heat damage, and using less electricity (and being more eco-friendly and all that jazz).

Keep in mind that the greatest advantage of this procedure only works when your computer is running at its maximum capacity. At least for me, simply watching a movie on my laptop is nowhere near max capacity. This procedure does not improve the temperature of the idle CPU capacity whatsoever.

For this reason, I think that this procedure will not do much to improve battery life. When my notebook is running on battery, it stays on the low multipliers most of the time, which is not affected by this process.

 

What's up with RMClock not recognizing my T8300? I'm running a Gateway FX and it doesn't recognize the cpu core, gives me an average of 55% CPU load when the computer isn't doing anything, and gives me a heat of between 34 and 35 degrees, which seems too low. Does anybody know what's wrong?

 

Here is a thought...

Like most intels, my FID profile looks like this:

FID 6x (idle)
FID 7x-11x (intermediate states)
FID 12x (max CPU power)

What if I unchecked all the FID boxes for the intermediate states? That way, I will be telling my computer to run at idle speed or max speed. Would this potentially speed up my system?

Or what if I unchecked all the boxes EXCEPT the max CPU power. Would this make my computer run faster because it doesnt need to transition b/w CPU states at all? The voltage between the Max CPU (after undervolting) and of my idle CPU is not too big of a difference.

 

On some penryn notebooks like the XPS, it shows up as unknown. It shows up fine for most notebooks though. You can still go ahead and undervolt, its not a problem.

Does HWmonitor show the same temps as RMclock?

Not really.. it will only leave your notebook with 2 states (idle and full power)

Yes alot of us have done this. Locking it to full speed so it doesnt have to throttle. You will gain a tiny bit of performance using this. I strongly suggest you only use this for AC power not battery.

Use the maximal performance sub-profile which only lets you choose 1 FID index. Choose the 12x obviously, this will lock the speed to 2ghz then on the main profile page choose Maximal performance on the drop down box for AC power > Apply

 

HWmonitor consistently shows 3 to 5 degrees higher temps that RMclock. Is it still ok to undervolt?

 

It`s always OK to undervolt, lol.
As long as the system is stable and passes Orthos stress tests,why not?

 

I'm attempting to undervolt my Toshiba Satellite L25 (Celeron M360, ATI RADEON XPRESS 200M, XP Pro) but having some difficulty. Programs are unable to detect my processor and in some instances my chipset as well. Consequently voltage and related areas are grayed out and not selectable within the programs I've tried. Am I doing something wrong or am I simply unable to undervolt this machine? Here are some screen shots of Notebook Hardware Control, RMClock & HWMoniter demonstrating that: (click to make larger)

 

Sorry but the Celeron M doesnt support Speedstep thus unable to undervolt at all. You will need to upgrade to the Pentium versions. They are better than Celerons by alot on all counts

I had that exact same 360 processor then i upgraded to a Pentium M 1.6ghz ($25) undervolted to .700v-.988v. Coolest thing ever, the fans literally dont need to run at all!

 

Thanks for the info. I have been thinking about upgrading to a Pentium M 725 (700-something, whatever one I can find a good price on ). I guess this is the time to do it. Even if it doesn't improve performance any, some extra battery life will be nice, since the Satellite L25 has the worst rated battery life for no apparent reason (40 minutes tops). The $25 upgrade is worth it if it can improve it by even 10 or 15 minutes!

 

Yes, the PM 725 is very nice. Thats whats in my notebook.

 

Try 30mins+ more

Speedstep really makes things more energy efficient, plus when you undervolt it, its super cool and efficient.

Pentium M 725 and 735 are the best buys.

 

Great guide my notebook is running way cooler so far. I've got one question though, I have an M1530 w/ a T8300. You mentioned turning off IDA during tuning. Did you leave this permanently off after the underclocking or did you mean just don't undervolt this number? What's wrong with undervolting IDA?

(sorry if this has been asked but this thread is a tad long to read the whole thing!)

 

Yeah, until you undervolt a computer in which RMClock and the motherboard/cpu don't synchronize correctly and sends 5 volts through. That's what I'm worried about since it won't recognize a seemingly common processor (t8300).

 

Thanks for this fantastic info, it's worked a charm for me, knocked 10 degrees off my CPU temp! Something I'm curious about though... I have a new HP8510p with a T8100.

CPU Info in RightMark says "Unknown Core" - does that mean it doesn't recognise the CPU, and will it still show the correct range of multipliers/voltages for my CPU? And as per the previous post, could this cause any voltage problems if mob/cpu don't sync?

Secondly, you mentioned that IDA can be enabled for the T8100. I've ticked it in both Profiles and POD/PST lists. It's listed with mult of 11x, however during stress testing, the CPU never hits 11x, only 10x max, which is the highest "normal" state before IDA. Does this mean Rightmark isn't enabling IDA properly, or that my CPU actually doesn't have it?

Thanks for any advice!

 

IDA is funny, and practically never used.

What it means is running ONE core at a higher clock rate, and shutting down the other completely.

Thus, a 10x max, 11x IDA = 10x on both cores, or one core at 11x and one totally stopped. It's only used when you're running a single thread using a lot of your processor - typically, something that doesn't happen in windows as background processes keep the second processor running if nothing else.