Simple Undervolting Tutorial - Pentium M Dothan - Page 44

ok i'll give this a try again but i don't have much time, hope this helps...

k, you've got min/max set... clk and highlight P-state 0, clk modify and enter your min voltage and make sure you chk "Auto-adjust intermediate P-state VID's in the "Add/Modify P-State" window so it will automatically interpolate the values between the min and max...

now do the same with P-State 10 except set it to your max value and make sure you chk "Auto-adjust intermediate P-state VID's in the "Add/Modify P-State" window so it will automatically interpolate the values between the min and max...

now all P-States from 1 - 10 should be set with 0 = to your min and 10 set to your max...

set "AC Profile" to Automatic Management", check "Use OS load based management and click "Apply"...

set "AC Mode" to whatever you want...

set "Batt Profile" and "Batt Mode" if you want...

for example these are my settings:

AC Profile Automatic Management
AC Mode Performance Level 4
Batt Profile Automatic Management
Batt Mode Performance Level 2

just to make sure you've covered everything:
Use P-State Transitions should be checked
Use on-demand clock mod... should NOT
Use OS load-based mgmt should be checked

make sure to clk Apply so it will save your settings...

the whole idea of setting the Profiles to Min or Max, is to keep the CPU running at that setting without it doing its SpeedStep and automatically changing CPU speed... Min and Max are just for finding the lowest voltage when the CPU is running at its lowest and highest settings... once that's done Auto Management let's the Pent M go back to normal and run at whatever speed it wants but running at the lowest voltage possible to save battery and reduce heat, that's it...

if there's anything else you don't understand, please just ask... i've been using RMClock for a long time and seen its evolution... it's changed a lot and is great now...

Thanks a lot!! Your instructions are a lot clearer and easier to follow.

A couple of other questions: I see that you've selected AC Mode Performance Level 4. Is this a suggested setting to keep your CPU functioning at the optimum level and does it make a difference if you choose at another setting? Does running your comp @ your minumim VID safe and has no significant effect or should I bring it up a notch?

thanks, glad i could help

i used to spend a lotta time here answering posts but haven't had the time lately... wish somebody would consolidate them all and start a new thread... ver 1.7 is VERY diff from earlier versions and so the instructions are diff too.. this thread could use some serious cleaning up but i don't know how to do that... i'd love to write up the instructions for the latest ver and keep it as the first post...

there's no way you can hurt anything running at low voltages, the worst that can happen is your pc will crash...

here is a link to the RMClock home...

and here is a link to the RMClock forum... don't let the forum confuse ya cause ppl are askin' questions about all diff cpu's not just Pent M's...

under the Management tab, the Mode option lets you set the performance to power saving ratio...

perf level 4 is max perf, balanced perf/power saving is just what it says, power saving level 4 is max battery savings...

btw, RMClock is written by a very nice and very smart guy in Moscow named Dmitri Besedin, you'll see he answers a lot of the questions in the forum...

lol i see you've already found the forums - u use the same name... didn't mean to insult ya by providin' the links but a lotta ppl that come here don't know where the forum is...

Thanks Man!!, I appreciate your help! I am just trying to tweek the performance on my new battery. I had my new laptop for over a week now! I am trying to keep it cool!

When I run CHC I seem to get a constant temp of 53C Is this normal? I was expecting temp around the 40 to 43c range. Any thoughts?

What temp are you getting with your 2.13?

Well, it looks like you manage to fingure out the rest of the cpu undervolting.

The temperature will change depending on how fast your cpu is running and how hard the processor needs to work. When I am running Spybot my temperature goes up, but with my email client, it is about 39-42c.

you can set CHC to show the temp in the tast bar.

Good job.

The room temperature might also be important as well. I usually average in the mid 50s during summer and in the mid 40s during winter.

Right now, my min is running one level above .700. Would it make much of difference to set my min @ .700 vid?

Another question, would undervolting affect other components such at my wireless card. For some reason now I am noticing that my wireless card light shut off when I try to connect to my wireless network. Would a low battery affect your wireless connection?

50C temps after undervolting usually point to either lesser cooling (Asus, for example) or the fact that your fans actually turn off because CPU wattage output is so low. In either case it's fine, don't worry about it. The difference between .700v and .716v is negligible. I've tested and vertyified that my lappy can do .700/1.084v 24/7 (it did for awhile), but I still run .716/1.1 everyday for the extra security. Undervolting shouldnt affect anything except the CPU (cooler running) and the battery life (longer). However, my wireless suffers too when I'm on low battery. Check your settings and make sure that your wireless card is cranked to max performance

inspiron 700m

if anyone is still interested I'm doing ~45C at 600 MHz .716V and arround 60C at 1.7 GHz 1.1V.

I do have a question however, I'm using CHC and I was wondering if I should use the custom dynamic switching or not. Currently I'm just using dynamic switching, but my clock seems to go from 6x to 17x all the way, it never shows any of the other speeds in between. I've seted 10x and 14x voltages but they don't seem to ever work... If I use the custom dynamic switching option, what load percentages should I use? Can I set a Max 100% load or is it better not to?

Finally, what scheme should I use for my battery operation, the default is Max. Battery but they don't provide any info about it...

Can anyone help me out with this?

Thanks...

Many will argue with me on this point, but intermediate speeds/voltages are more or less useless. Really, you're either using your processor or you aren't. Programs that only use say 50% CPU usage consistently are few and far between, which are really the only cases to warrant intermediate steps. But why would you only want a portion of your processor speed dedicated to a program? The custom dynamic switching area simply allows you to designate which load percentages trigger the switch between reduced speed and max speed, there's really no need to change them. Max. battery will give you the most power saving. I leave it on dynamic switching for both A/C and battery mode just because I also game on battery. Think about your usage and base your settings off that. Hope that helped

Thanks!

Mr. K6,

thanks a lot!

Centrino Hardware Control has recently been reducing my system stability. As in "I start using my computer outside of World of Warcraft, particularly after I was just playing it, and it BSODs. Frequently."

So I've turned it off for now. I might try RMClock again, but I'm not seeing any big need for it.

Note: I've used CHC/RMClock for months and the problem only recently developed. I think that it was actually when I switched batteries, so there may be something wonky about CHC and my new battery.

I do have to sigh, though, because I crash in 3D games unless my notebook is elevated. Even sitting it on top of DVD cases is enough to elevate it so that it doesn't crash, but if I don't do that...Lockup! Stupid 6600. I know mine is the exception, not the rule.

Test what voltages you're running again, BSOD = not enough power to the CPU. Also, is your 6600 overclocked? Trying taking down its clock, or, trying improving the cooling solution with better contact or AS5.

They were tested, and they were stable for months. The issue is clearly degradation.

It is almost certainly not an issue with the 6600, which is not overclocked (if I had heat issues with it, I wouldn't leave it overclocked.) It did occur during light usage not presaged by World of Warcraft. It occured even after bumping every voltage on the processor up a step in CHC. I've simply turned CHC off (albeit not entirely without regret - its ability to monitor hard drive SMART and disable spindown was much appreciated on my part, because I have the occasional bit of stutter in games without doing so.)

Is it possibel to go under 0,7V ?
My 1,5 dothan is stabel at 600Mhz @ 0,7V, but i like to save even more )

It doesn't matter, at that frequency and voltage, the processor uses essentially no power. The rest of the laptop components are probably using 20-50x more power.

I know, but still i would be nice !

Hey ya'll...good thread. I recieved my z70va about a week ago, and I am trying to get it tweaked to perfection. So far I am using CHC to help with battery life when I am luggin it around school. I get around 55c CPC temp when I am using "battery optimization" in CHC. But when I plug the AC in and go to "dynamic switching" my CPU temps sky rocket to 75 - 80c, and I am not even doing anything...I am just looking at the CHC application. If I just close CHC, the temps remain...I am not overclocking or anything. I want to use the full power of my cpu...but I dont like the little red flag down there...makes me nervous. I ordered my laptop with AS5...but maybe I should throw some more on there?

Been using CHC for a while now, is an excellent very easy to use program. The sweet spot for my Pentium M 730 1.6GHz @ 1.87GHz is 1.15v Prime Stable 12 hours

Excellent on battery at 0.7v 800MHz