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Simple Undervolting Tutorial - Pentium M Dothan - Page 51

post #1001 of 1202
12/14/05 at 9:34am
So, I used Prime95 for a bit more than 13 hours, but I stopped in the first 2 hours very quickly to adjust Prime95 for more stressful mode. Even if just a matter of (what? 20 at most) seconds, I guess I had nothing more than 11 hours straight.

1.052v for 11 hours with no errors or warnings is good...
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post #1002 of 1202
12/14/05 at 2:26pm
S_NINJA: Maybe I didnt make myself clear in my other post, but I recommend that you completely uninstall toshiba power saver for awhile just to see if it is or isnt the source of the problem.

Wow, looks great DDDa
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post #1003 of 1202
12/14/05 at 10:00pm
Just started minimum profile test at 0.748v. A little more than 3 minutes... Hope I can decrease it even more.

edited: I went down to 0.716v, but when I put it on 0.7v my whole system slows down and it's impossible to use it. After 1 minute I finally managed to restore the previous 0.716v and instantly evertyhting came back to normal. When testing the minimal profile, will Prime95 find errors or I should look for slow downs as a signal that something bad is happening? this confused me a bit.
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post #1004 of 1202
12/14/05 at 11:38pm

this is a noob question but,

anybody see any danger with undervolting a 700m. I would appreciate it if someone who undervolted a system similar to mine would speak up on suggestions/experiences.
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post #1005 of 1202
12/15/05 at 1:23am
ok, i've uninstalled powersaver (i hope i can reinstall it ok if it isnt' the problem).

i'm now prime95 testing and using it normallly right now @ maximum voltage...
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post #1006 of 1202
12/15/05 at 1:47am
Quote:
Originally Posted by 0wn
anybody see any danger with undervolting a 700m. I would appreciate it if someone who undervolted a system similar to mine would speak up on suggestions/experiences.
It's the same process on any Pentium M based system. Just follow the guide, all the CPUs are the same.

S_NINJA- Let's see if that helps
P.S.- Here's toshiba's support download page. Just plug in your laptop series and model and you can download the power saver utility if you do need to install it again (if it isnt the problem).
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post #1007 of 1202
12/15/05 at 10:51am

Yay!

0.716 for > 12 hours and no problems whatsoever. Anyway, I think I will leave it one step above (0.732v). Very weird things happened with 0.7v. Not just errors in prime95...

My final numbers:
- 1.052v Maximal
- 0.732v Minimal (0.716v is safe, but...)

I can feel my notebook much cooler already. And the fan on the notebook is not as loud as it was before (lower RPMs I guess)!!

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post #1008 of 1202
12/15/05 at 3:27pm
Quote:
Then I started CS:S and my comp restarted... wow
I believe a any graphics and CPU intensive application will stress your system more than a CPU intensive application alone. Many laptops have a combined heatsink for the graphics and CPU. So when your graphics chip is putting out a lot of heat, you end up reducing the heat removal capabilities of your processor. This will cause the processor to have problems that wouldn't normally arise with a CPU intensive application alone.

For testing on a laptop we need to stress both the graphics system and processor to test stability. So CS:S seems good, but if someone doesn't have that available running Prime95 and something like the OpenGL Geometry Benchmark at the same time should also do the trick.

Does anyone know a better application, that will report errors like Prime95, and test the video with the CPU?
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post #1009 of 1202
12/15/05 at 4:49pm
Looks good DDDa
Quote:
Originally Posted by Firestrand
Does anyone know a better application, that will report errors like Prime95, and test the video with the CPU?
Off hand, I'd say looping 3DMark2001SE would be good. Or you could run prime95 and RTHDRIBL at the same time, although RTHDRIBL doesnt really report errors. That said, prime95 and ATi Tool would be good.
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post #1010 of 1202
12/16/05 at 1:53am
Quote:
Originally Posted by 0wn
anybody see any danger with undervolting a 700m. I would appreciate it if someone who undervolted a system similar to mine would speak up on suggestions/experiences.
It is safe to undervolt your 700m . I have an Uniwill 223II0(AKA Alienware Sentia) and it is stable and runs cooler.
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post #1011 of 1202
12/18/05 at 7:10pm
Quote:
Originally Posted by Mr. K6
S_NINJA- Let's see if that helps
P.S.- Here's toshiba's support download
Hi again,

I did uninstall Toshiba powersaver, and ran RMclock only w/ "always on". After a couple days it seemed to work pretty good...but just now...it froze.

I now have no idea what to do. I've now re-installed toshibia powersaver, and have discontinued using RMclock....

I would really like to know how I can fix this freezing problem, so if any help is available....please lend a hand.
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post #1012 of 1202
12/18/05 at 7:18pm
If it went fine for a few days and then froze, you probably just have your voltage set too low, try raising it a notch.
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post #1013 of 1202
12/18/05 at 10:02pm
Quote:
Originally Posted by Mr. K6
If it went fine for a few days and then froze, you probably just have your voltage set too low, try raising it a notch.
Heheh... that's what happened with me some hours ago. I did exactly that since the problem was very simmilar to the one I have exactly after i set it as 0.7v. I raised two just to be sure, because I had this damn problem when I was working on a college paper... (need to start under secure mode etc. etc. etc.). Finally something made me use more windows (i was slowly moving to Linux)

Right now:
1.052v / 0.764v
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post #1014 of 1202
12/19/05 at 2:08am
Quote:
Originally Posted by Mr. K6
If it went fine for a few days and then froze, you probably just have your voltage set too low, try raising it a notch.
ok... even though it was prime95 stable for 12+ hours?

anyway, i'll give that a shot.

raised my voltages from
6.0x @ 0.732V
14x @ 1.164V

to:
6.0x @ 0.748V
14x @ 1.180V
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post #1015 of 1202
12/19/05 at 1:39pm
Well, it worked for DDDa and it did work for me on my old 760. If not, you still have a software issue somewhere, and a real bugger of one. Keep trying it and see how it goes. Is everything else in your computer stable? Any aftermarket RAM or something of that sort?
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post #1016 of 1202
12/20/05 at 4:50pm
Quote:
Originally Posted by Mr. K6
Well, it worked for DDDa and it did work for me on my old 760. If not, you still have a software issue somewhere, and a real bugger of one. Keep trying it and see how it goes. Is everything else in your computer stable? Any aftermarket RAM or something of that sort?
No aftermarket RAM. just the standard 512 that came with it. Everything else on the computer is stable. and I never had any problems before I started with RMclock.

It's sill only been a couple days, and seems fine... (who knows though). I'm kinda dissapointed that my voltages have to be so high, but without a stable machine, then low voltages are meaningless.

thanks again, for all the help. I'll be sure to update on the situation.

S_NINJA
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post #1017 of 1202
12/21/05 at 2:36am
The other thing you might want to try is getting rid of RMClock (just click the wipeout.reg file in the RMClock folder) and trying out CHC. It might work better with your system, who knows?
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post #1018 of 1202
12/21/05 at 10:00am
I've made up my mind to undervolt my newly aquired NB I'm doing it by the book in this thread (many thanks to Needledik), although Prime95 hasn't reported any errors and I'm as low as 0.924V (13.0x). Is this possible as you have all reported higher values? CPU load doesn't go higher than 85% during the test.

Also I would like to ask if anyone knows the downsides of installing .NET framework 2.0, which is needed to install CHC? I've read somewhere that it slows down the system, is it true?
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post #1019 of 1202
12/22/05 at 12:51am
Looks to me like you got a VERY good 1.73 . Nice undervolt man

I've heard both sides of the story. I currently have it installed, havent noticed anyslow downs, so if there were any I've tweaked them to nonexistence . You could run some benchmarks I guess. I dunno much on it to tell you the truth though
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post #1020 of 1202
12/22/05 at 2:57am
i have a noob question.
does undervolting effect performance / quality, will it effect my laptop's efficiency in any way? is it safe ? and most important, is it really worth it, how much more battery power can i get than a normal cpu ?
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