Undervolting

I read the thread on undervolting and is there any reason I shouldn't do it?

 

Maybe, but none of them are good reasons.

 

of course not....i mean who doesnt want their laptop to run at least an average of 5C cooler for the cost of virtually nothing. i was lucky enough to drop my average temps by about 14C. my idle averages about 22C and under load, i have yet to see 50C except ONE time.

 

so basically i should just follow the guide and its not that hard?

 

It doesn't seem to make sense to me. If you lower your voltage you increase the current. This means more current. It seems to me like you could possibly burn something up. For example if you take a 130v 100w light bulb and stick it in a 120v socket it will be slightly less bright than a typical 120v 100w light bulb but it will last longer. If you took a 120v 100w lamp and stuck it in a 130v socket it would be brighter but it would also burn up quicker. So either way with the cpu you are going to affect it. I'd just leave it be. "If it ain't broke, don't fix it."

 

correct. if you have any questions regarding undervolting, you can direct them to flipfire (the writer of the guide) or me, and ill help you the best i can.

 

Thanks, hopefully I wont be panicked on another computer writing about where I've gone wrong.

 

No worries, if you lock the machine(which you're more than likely to do), just reboot and it'll default back to your previous setting. You're not gonna break anything.

 

Thanks, that's actually pretty comforting and I'll take all the advice I can get.

 

Ever heard of a resistor?

If that was true, your current CPU would be fried by now even without undervolting. Speedstep has been switching your P-state voltages dynamically since you got that notebook.

 

I undervolted my previous laptop; still ran perfectly 2.5 years later.

FYI, I was able to take off ~12C on my 6831fx with the stock CPU (T5450).

 

What are your multiplier temps for the 6831 cpu?

 

~37C min, ~55C max.

edit:

6x - 0.9500V
7x - 0.9625V
8x - 0.9750V
9x - 0.9875V
10x - 1.0000V

 

can you post the voltages please.

 

are you supposed to be able to lower the higher multiplier more the than the lower?

i have the 11.0 at 1.0375 right now, and haven't tried anything past that.

 

Resistors are only built for so much as well The resister they put in is made to take the fluctuations that the machine is normally at not what will be at after. Ever heard of a resistor burning up? That happens as well. But at least you'll burn up our resistor before you kill our CPU. I don't know it just doesn't seem like a good idea to me, resistor or not.

 

I'm currently running my T8300 at .975v across all multipliers. It's rare I see a CPU temp above 60c, and I'm on my porch on a hot Summer day. Needless to say, I'm pleased.

 

its actually wiser to keep the lowest multipliter at a lower voltage than the highest multiplier...otherwise you would have some weird idle temps.

you can TEST to see if you are able to run the highest multiplier at the same voltage as the lowest multiplier, but i highly doubt you will be able to, stably.

i run SLFM @ 0.95V, 6x to 9x @0.95V, 10x @ .9750V, 11x @ .9875V, 12x @ 1.0125V, and IDA/12.5x @ 1.05V (read the uv'ing guide for more info pertaining to IDA/12.5x multiplier on the T9300)