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Simple Undervolting Tutorial - Pentium M Dothan - Page 39

post #761 of 1202
8/22/05 at 1:07pm
Every CPU is different. You should never expect a setting to work just because it worked on another CPU. Prime95 test, always. I just actually found out that .700v is not stable on mine because it crashes after 5 hours of priming, so, I raise the voltage.
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post #762 of 1202
8/22/05 at 6:56pm
I know it's a little late to be asking this, but when you guys run Prime95, what test do you run? I run the Torture test. Or should I be running CPU?
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post #763 of 1202
8/22/05 at 7:00pm
yep the torture test... all of them...
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post #764 of 1202
8/22/05 at 7:37pm
Ok, cool. I ran Prime95 @ 22X(2.26Ghz) and 1.276V and got an error after about 1 hour. Raised volts to 1.29 and so far, Prime has been running for about 2 1/2 hours error-free and ~79C. Sure wish I could get the volts lower, but I guess anything is better than nothing. Looks like I've got it pretty stable at minimum volts though- 6X(800Mhz) @ .7V.
You know what's weird though? On the "status" page of CHC it shows 22X, but on "CPU voltage" page, it shows a 17X multiplier.
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post #765 of 1202
8/22/05 at 9:15pm
With my Dell i8600 I got the following:
P-M 1.6 GHz
- 6x @ 0.700 V (Test for 18+ hours no errors)
- 16x @ 1.052 V (Test for 10 hours no errors)
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post #766 of 1202
8/22/05 at 9:59pm
Nice voltages and nice testing Hellfire, looks great.

rage, how's your cooling solution on the Asus? 79C is pretty damn hot for a CPU, you really should never go above 70C, even if it's mobile. I'd check the grease and your mounting mechanism to make sure it's on right. Other than that, you probably won't be able to get much lower than that. Just like any processor, it's going to need more volts because it's running overclocked. It's still good that you got to take some off though. Keep testing though. Usually LargeFFTs (the middle option) gives the quickest results for torture testing. The bottom one does nothing: it primarily tests the RAM, so don't use it.
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post #767 of 1202
8/23/05 at 8:56am
Damn, I thought 79C was kind of high. I was in the 74C range and I thought that was high, so I redid the thermal paste. I thought maybe it got messed up when I removed the CPU and heatsink to do the pin mod. I guess I'll take a look at it again and possibly redo it. I've been running the middle torture test and like I said, it ran for 4 hours yesterday @ 1.292V with no errors.
Thanks for the info.
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post #768 of 1202
8/23/05 at 10:11am
Finally got the voltages down a bit on my HP NC6000, 1.6GHz Pentium M Banias, from 0.908V / 1.484V to 0.748V / 1.212V. Banias doesn't go as low as Dothan, so I'm happy with these. Temperatures have dropped a bit since, which helped fix the Crazy Touchpad issue (most of the time) and slightly improved battery life. I use MobileMeter for temps, but it doesn't tell me which of the 3 thermal zones is which, so I can't really say what's the CPU temp. One is ~40*C, one is ~50*C and one is ~30*C on normal load.

I've read about half of this entire thread, so forgive me if I missed something. My question is: is there any way to make these voltages stick without having to run a tool like RMclock? Does it write the values into the registry, or does it talk to the CPU directly, or how does it work?
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post #769 of 1202
8/23/05 at 12:03pm
rage, it's good that it can run it stably, but even if it can, those temps are still too high. However, you can still do the old hand test: stick your hand behind the computer next to the CPU HFS. If the air coming out is boiling hot (as in holy s*** that's burning my hand), and there's plenty of airflow, then the heatsink is doing its job. If it's just hot or warm air, then the heatsink isn't making good contact and you need to check that. Good luck man

ed, if you want an accurate temp program, download CHC but don't undervolt with it, just use the temp monitoring. As far as RMClock goes, it's necessary to run it because it actively requests those voltages. The good thing about this is that any time there is a screw up, you can exit the program and things go back to stock. As far as I know you can't make the voltages stick because the BIOS is locked, therefore you need software monitoring to make them run.
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post #770 of 1202
8/23/05 at 3:30pm
Quote:
Originally Posted by rage4order
You know what's weird though? On the "status" page of CHC it shows 22X, but on "CPU voltage" page, it shows a 17X multiplier.
Are you running Power4Gear? I've noticed that its interactions with CHC seem to make things like that happen -- my 2.13 GhZ was showing as 1.6 GhX at 16X.

Funny thing -- I ran a 7-hour torture test last night at 1.084 V / 16X, with no errors, but got an internal compiler error trying to compile OGRE just now, so I popped the voltage up to 1.1, and all is copacetic.
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post #771 of 1202
8/23/05 at 5:25pm
PJ, I'm not running P4Gear. I ran RMClock and that also shows 17X so I guess it's just something with CHC. The cpu reading is right on both though- 2.26Ghz. It's just the multipliers that are different.
Mr.K6- I have good airflow and the air coming out is very warm to hot, so it looks like the heatsink and fan are working fine. I think I'm gonna open 'er up though and redo the paste anyway.
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post #772 of 1202
8/23/05 at 8:44pm
Quote:
Originally Posted by rage4order
I think I'm gonna open 'er up though and redo the paste anyway.
Good idea, I'd do the same . And it should show a 17x multiplier, that's what you're running: 133x17 = 2.266Ghz.
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post #773 of 1202
8/23/05 at 11:05pm
i use Centrino Hardware controller to do my Speedstepping for my CPU. Its a great tool for those with Sonoma technlogy in their PCs ( i know i6000's have Sonoma) not sure about other types of dells... My normal idle temp is 29c degrees


Playing around with the Cent hard cont, i was able to get my maximum battery life up to an additional hour of what i was at... so i went from 3 hours and 36 minutes to 4 hours and 44 minutes.

This is with a 6 cell battery
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post #774 of 1202
8/24/05 at 1:29am
My computer averages about 52-53C while I play music, AIM, and Firefox. When I wake up and I'm on a battery, I get somewhere in the 40s. I have a 700m which is small so is that why it runs kind of warm?
Also, my wireless seems to have been working kind of funny since I used CHC. Any ideas?
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post #775 of 1202
8/24/05 at 1:48am
My wireless is fine with CHC, make sure your router and your laptop arent by any TV's, stereos, or microwave ( i dont want to know why you would have a laptop by a microwave.... but hey) Thats the only thing i can think of.
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post #776 of 1202
8/24/05 at 10:37am

Alternate test to Prime95

If you have a compiler on your system, try compiling something big, like Ogre.

I have found that in fifteen minutes, I can find stability problems that sneak past overnight torture tests.
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post #777 of 1202
8/24/05 at 5:01pm
Well, I redid my thermal paste and it seemed to have helped a little bit. Ran Prime95 for a few hours at 17X and my temp hovered around 76C. That still seems a little high but I don't plan on stressing my CPU in any real-world situations any time soon. I've been doing some video editing today and my temp has stayed around 62C.
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post #778 of 1202
8/24/05 at 10:44pm
Quote:
Originally Posted by rage4order
Well, I redid my thermal paste and it seemed to have helped a little bit. Ran Prime95 for a few hours at 17X and my temp hovered around 76C. That still seems a little high but I don't plan on stressing my CPU in any real-world situations any time soon. I've been doing some video editing today and my temp has stayed around 62C.
I still don't understand why it's that hot, what's the cooling solution on the Asus anyway?
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post #779 of 1202
8/25/05 at 12:06am
I'm using Arctic Silver. I'm putting a very thin layer. should I try a bit thicker layer? I'm gonna go with my original plan and remove the pin mod for now and see how my temps go. I know they'll go down, but I wanna see by how much.
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post #780 of 1202
8/25/05 at 2:44am
i have the minimal and maximal voltages set via the tutorial and it was working great (it throttled down great when there was no load). however, recently, it hasn't been throttling down at all, and staying at full speed/voltage/multiplier pretty much 100% of the time. under the monitoring tab of rmclock, the cpu load is always atleast 50% and the os load is around 0-5%. i do have a lot of processes running (around 50, beleive it or not, i really need all of them), but it should still throttle down... can anyone gimme some advice? thanks

edit looks like i found the problem: i decided to change the antivirus program i use, avant used too many resources, had like 5 processes going at all times, so i uninstalled it and replaced it with AVG, and lo and behold, my cpu throttles down now!! sweet.
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