The "Undervolting" Guide

Hi there,

I'm really confused. Before using RMclock my T7500 had a max of 79C at stress.
and the GPU 90C. Using RMclock I have a max of 79-80C and the GPU is somewhat lower?? I think the CPU and the GPU use the same cooler.

It just doesn't lower the temp at all, btw SuperLFM just works fine.
After one night at idle with RM the temp is 56C, but when working it's about 63-70C.

Why is it not working?

 

You probably missed a setting, double check you followed everything in the guide.

You should definately notice a temperature drop.

Can you post a screen shot of your voltages? What notebook is it btw?

 

It's a Xxodd,

 

Can't you undervolt the 11x more? What is the default voltage for 11x?

 

That is very strange. All the settings seem to be correct but for some reason your cpu temps didnt change at all. Makes me wonder if the undervolt is really in-effect

I got nothing. Anyone?

 

Hmm... in Profiles->StartUp there is no profile selected..if he/she restarted the computer, although rmclock is running, actually there is no undervolting..

The 'Auto-adjust intermediate states VIDs' option is ticked, and should be unticked right? OK I don't know if this has something to do in this case but..

EDIT: He/She has the same CPU as mine(T7500 Revision E1 Signature 6FA), and I've lowered mine to 1.000v(rock stable)..

 

That's fine, I've that checked also.

This is definitely very strange, on his/her CPU info page, everything seems to be working fine, cause it is showing 0.8500V and 600 MHz idle speed. Temperature is definitely a bit high for idle.

 

Just run a 5min test with orthos here's the result with rmclock running and btw me is a he

 

Hi Kaljo,

Your max temp looks like factory voltage temp, however your min/idle temp is quite high I think. Normally, even with factory voltage setting, your idle temp should be under 50c.

What is your idle temp when RMclock is not running?

 

Kaljo, you need to set everything to run on Performance on Demand.
That's how I do it and the temp drops are insane(close to 17C on full load).

 

With RM running:

Idle 600MHz at .85V CPU-Z says 1.2GHz at .963V

Running a program 2.2GHz at 1.1V CPU-Z says 2.2GHz at 1.213V

Is CPU-Z not very reliable?

Idle temp diff with RM on/off is 3C

Set all to Perf on Demand---> no diff

 

Sony FZ-340E/B (T7250 2.0G)

Temp @ Factory Setup (1.1750) (See Pic)
CPU Max@ 71C
CPU Idle@ 39C

Temp @ 1.1500
CPU Max@ 71C

@1.1625
CPU Max@ 70C

@1.1250
CPU Max@ 68C

@1.0875
CPU Max@ 65C

@1.0625
CPU Max@ 65C

@1.0500
No Blue Screen, but the program stopped at around 15mins mark

@1.0375
No Blue Screen, but ORTHOS stopped working for me twice in a row. (See Pic)

Was that because my max multiplier is lower then other multipliers? What value should I put on those multipliers(9x-6x)?

Thank you!

 

if the program stops....that means there's an error. raise the voltage back up to 1.0625 and you should be good to go. it's okay if the max multiplier is lower than the other multipliers....you're simply trying to find the lowest voltage you need to run at the highest multiplier, since that is what orthos uses. you can then fine tune your other multipliers the same way by unticking the highest multiplier on the main profile page and move down from there.

 

Don't use CPU-Z to read undervolted settings, cause CPU-Z will not show the actual undervolted voltage. The "CPU info" page in RMclock is pretty accurate.

As for why your CPU is running so warm even at idle, I really can't think of something else except maybe the heatsink isn't properly seated? But then it doesn't make any sense either, cause your peak temp without RMclock seems to be pretty normal.

For your 11x multiplier, have you tried going lower than 1.1000V?

 

Removed the whole program, cleaned the reg, reinstalled.

Set 11x to 1.0500---> stress temp still 76C constant.

Is CPU load and throttle value normal while running orthos?

 

Your CPU load is not normal at all, only at 30%. And one of your throttle isn't normal either, it shouldn't be at 628, it should be at 2194 when ORTHOS is running.

 

Tried on XP pro, same results.

Just tried something else and now i'm lost, not JUST lost but completely lost.

Running rm, profile no management, monitor mode
Running ORTHOS

When ORTHOS starts my CPU load starts jumping from 30-40% to a unbelievable 141-171%!!!???

After a while everything gets stable and see the picture what happens, ORTHOS running at 1.2GHz at 8.0x

Is the monitor function with this profile unreliable, or is all of this really happening?

 

When you select "No management" in profiles, CPU works with it's default voltages/settings..
Nevertheless..this is some really weird things happening to you..

 

Undervolting won't affect performance?

I think it does

Last and final test

Running RM, profile Performance on demand, 11x 1.0250V, Monitor mode
Running Trojan Remover scanning Program Files
CPU core clock: cont. 2.2GHz
CPU Throttle: every now and then drops from 2.2GHz to 600MHz
CPU load:30-100%
OS load: 100%
FID 11x VID 1.0250
Temp 76-78.8C
Scanning time: 42Min

Running Rm, profile No management, Monitor mode
Running Trojan Remover scanning Program Files
CPU core clock: cont. 1.6GHz
CPU Throttle: cont. 1.6GHz
CPU load: 30-40%
OS load: 20-40%
FID 8x VID .850
Temp 72-73C
Scanning time: 17Min

That's a difference of 25Min between test1 and test2!!

Why is the CPU Throttle in Test1 dropping everytime (and so the CPU-load)?
It does the same when running orthos

I suppose when it goes down the CPU runs at 600MHz instead of 2.2GHz and is slowing down the process it's running.

I think this was my last test and I will put RM aside because it just won't work on my notebook, unless someone's got a brilliant idea or the perfect solution.

 

Technically lowering the voltage cant affect performance. But if the RMclock settings isnt setup properly then yes it could interfere with the performance.

I guess undervolting just isnt cut out for your notebook. You might wanna try other cooling solutions

 

Hi,

One quick question here.

After undervolting all multipliers, my T7250 idle on [email protected] (the lowest voltage option, SuperLFM 6x). The current multipler moves around every FID @ idle(6x most of the time), resulting core voltage and throttle change between 598mhz to 1995mhz. On the other hand, the current multipler stays at 6x with SuperLFM unticked ([email protected], idle). Should i still use the SuperLFM in this case?

Thanks.

 

I've similar settings, idles on [email protected] using SLFM also. I find the idle temp dropped by 1-2c due to a lower clock speed, so I'm keeping the SLFM, plus I don't see any performance decreased with idling at 598MHZ.

Also, my 10x is able to go to 1.0000V, have you tried that?

 

If your OS demands more processing power then yes it will need to use a higher multiplier. 600mhz doesnt seem to be cutting it for the OS's demands causing it to throttle up.

I find mine sticking to 600mhz nearly all the time. You might have alot of unnecessary programs/services running. You might wanna optimise that.

 

I got an error msg from ORTHOS when I tried to use 1.0375v for 10x. Still trying to figure out what went wrong. (I attached error pic on pervious post)

BTW, what max temp did you have for running 1.00v for 10x and how long did you run it?

Thanks.

 

Nothing went wrong with yours, I guess your CPU needs just a little higher voltage than mine. If you got an error with 1.0375V, then just keep it at 1.0500V. I ran mine for over 2 hours @ 1.0000V, I don't remember the exact temp, but it shouldn't be that much of a difference from 1.0500V.

 

It seems like when the temp goes up to about 79C throttle drops to 628, CPU load to 30 and OS load to 100.

When it cooled down to 76C it stays there for a while, maybe 30sec, and then 628 goes up to 2194 CPU load goes up and OS goes down.

It keeps on doing this all the time

So it seems the system has a build in security for temp getting up to high, and automaticly drops to 628 to cool down fast.

When I force the throttle to stay at 100% the temp keeps on going up and up and up, so I stopped it at 84C because it was still going up.

Mobo:
Model: Santa Rosa Crb
Chipset: Intel GM965
Southbridge: ICH8-ME

Do you, or someone else, have an explanation?

 

Do you mind telling me what's your notebook brand/model? I can try to do a little search on it to see if other people are having the same problem as yours.

Also, in your BIOS, do you see any CPU power management settings that you can play with?

 

Already looked in my BIOS answer=no

It's a Xxodd 8227d also known as Gnote or Medion Akoya

BIOS Phoenix R1.03 08 feb 2007

 

Now this is challenging, almost everything about it is in Dutch. :twitcy:

I found this thread, someone is using RMclock also, but I'm not exactly sure what they're saying since it's in Dutch.

http://gathering.tweakers.net/forum/list_messages/1173998/14
http://gathering.tweakers.net/forum/list_messages/1173998/30

 

Temp dropped by 4C they think it's already kind of undervolted, and they have a temp of 55C stressed! on a T7700

 

Something is definitely not normal. What Intel chipset driver version are you using? The one from XXODD is 8.3.1.1014, while the latest from Intel is 9.0.0.1008.

I didn't see any BIOS update on the XXODD site, have you tried contacting XXODD and see if there is any possible BIOS update since Feb 2007?

 

I've ver. 8.2.0.1000 can you post the Intel link, can't find nothing on Intel's site

 

How come you're using one that's even old than the one provided by XXODD? I know they fixed some bugs between the 8.2.X and 8.3.X. The new 9.0.0.1008 just added support for a certain CPU.

Next to P965, under Chipset, click on download, then select XP.

http://www.intel.com/support/chipsets/sb/CS-022768.htm

For some reason, they took off the download for Vista, you will have to get the Vista one from XXODD or when Intel updates the site.

 

Got my lowest voltage yet, 1.037V. So far running stable after half hour of ORTHOS...
I just loooove RMClock

 

I can definitely see the benefit of undervolting. However, in regards to modifying the multipliers from highest-to-lowest, I find myself wondering if that is the wisest idea. I have no experience with undervolting, so correct me if I'm wrong. But I would think the two most popular (in terms of usage) multipliers would be the "idle" and "max" multiplier. Now, understandably we don't want to touch the "idle" multiplier. To mod the "max" multiplier, however, I see as causing accidental underclocking (even if you did OC your processor). Any thoughts on that? I can DEFINITELY see the benefits of undervolting all the in-between multipliers, however.

 

Yes ive previously stated that the idle and max multiplier are the most utilized speeds.

I think youve misunderstood. I dont see how it can cause accidental underclocking.

Think of it as your CPU running exactly the same way it is now, except on lower voltages.

 

There is no problem at all touching the idle multiplier, a lot of people have lowered the voltage for their idle.

filpfire, I think you should rephrase a few words in your guide.

 

All C2D idle voltages are already locked at their lowest on RMclock. You cant change/lower it any further.

Only Pentium M's can lower the idle voltages by .200v

 

Well, when you`re idling at 30-33C , who cares?

 

Hmmm, alright. Yeah, I was viewing it as just being less energy intensive in the beginning. When I do this later (when new notebook arrives), I'll take a look into monitoring the clock-speeds some, but I think you're right, it should be fine. Thanks for the great guide. +Rep.

 

I thought I've seen many people with the new Penryn were able to drop the idle voltage?

 

Nope they all tried doing the registry tweak and all those other magical tweaks and all failed.

The lowest they are able to achieve is what RMclock has already defined. Which is .925v or .950v for penryns.

 

I see, thanks for clearing it up.

 

Kaljo, any luck?

 

Downloaded the drivers from Intel and installed them, they are for XP and Vista it now says ver. 8.3.1.1005.

There is a slight difference.

Running RM with profile POD ans orthos throttle and CPU load keep jumping up and down, before it was less jumpy temp 77C

Running RM with profile NM and orthos all is very jumpy and after 1-2min it gets stabile. CPU load and Throttle 1194 CPU/OS load jumpy Multplier 6x .8500V temp 74C

Standard my notebook runs at idle 8x 0.8500V o.8GHz, so there is hardly nothing to win with RM.

The temp. difference between standard and RM at 11x 1.0500V is 3-4C tops.
Some programs i run with RM on, run at 2194 so heat is up, running the same programs with RM off the system decides what's best in that case it could be possible it runs at 1.2 or 1.6GHz so it runs slower but less heat.

Running orthos with RM on the system forces the throttle thus the CPU load to go down every now and then, so orthos can't really stress it.

Putting a double fan underneath the back , so the airflow cools the bottom and lifts the notebook at the back, gives me a result of aprox. -10C at idle/working level.

Dilemma: heat or speed?

 

I still find it strange that your CPU is jumpy with ORTHOS, not exactly sure why. First time seeing this to be honest. By the way, is it the same in both XP and Vista?

 

I have a question. do I lower the voltage only for the highest multiplier?

 

The highest (not IDA) multiplier is the most important one, then you change the lower ones accordingly. You can go through the ORTHOS test for all of them. Personally, I like John's method/theory, so I just checked the "Also-adjust intermediate states VIDs" checkbox to let RMclock adjust the rest for me. For the record, I did do the ORTHOS test on all of them, the outcome was not that much of a difference to auto-adjust, plus I prefer the auto-adjust setting because the voltage increment spreads more evenly.

 

Im going to re-write the 'finding intermediate multipliers' through Johns way. Ive only wrote it as a quicker alternative so far.

I guess this method will be easier and safer than going through every multiplier. Though i was able to go a little lower by using my current method.

 

I'll give it a try, my XP is still a 'fresh' install.

Btw rm monitor pofile NM says system idle .8500V 8x 0.80GHz both CoreTemp and CPU-z say 1.6GHz, which one should I trust? Are there any other tools which can display the coreclock in realtime?