H all,
I undervolt my E6600 @ 2.4Ghz from stock 1.325V to 1.020V with temperature @ 44C full-load with room ambient @ 30C (CPU stress test with orthos > 2hr in progress w/o any error yet); Super PI gave me no impact on the performance. Btw, will undervolt cause any harm to the CPU or other components? Thks in advance~

This post has been edited by sotong168: Sep 10 2007, 01:35 PM


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tat is underclocking...main advantages is to save power comsumption...i do it too...

i don think there is any harm to the processor

underclock = lower than default speeds.
undervolt = lower than default voltages

, used to do it on my Venice E6, instead of 1.4, i use 1.2vCore, damn i love the temp even on stock heatsink, well that's the old story eh...
anyway, there's nothing wrong with undervolting/underclocking, it's just lead to unstable system due to low voltage supplied , correct me if i'm wrong...

@nate_nightroad, as slash mentioned, it is undervolt not underclock and thus i suppose there is no impact on the performance, mind to tell your setup?

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Added on September 10, 2007, 1:44 pmorthos should be able to test on the stablity right? thks~

This post has been edited by sotong168: Sep 10 2007, 01:44 PM

i did mine same as urs which is at 1.020V..but i also underclock mine as well from 2.4 till 1.9...

run steady...can play most of the games(oblivion,nba,fifa,C&C)....

temp i think is around 40+

It is best to test for stability when you undervolt and underclocked. I usually run orthos blend test for 6-12 hours at that underclock/undervolt setting. If it passes, then I would consider the rig 99.99% stable....

I undervolt my laptop. The laptop is now cool enough to be switched on 24/7 with folding@home, without laptop coolers. I think undervolting actually extends the life of the processor, instead of causing damage. I do prime95 for at least 6 hours to determine the lowest stable voltage.

yes its safe but generally it cannot exceed the -10% mark IIRC

I undervolted 22.69%.

Is that referring to the voltage or the speed? I would guess the vcore right?

Should be vcore.

I see. I did do some research on undervolting previously but never came across anything saying that the vcore should not be lower than a certain percentage.

The only thing that was theorectically harmful was for older generation AMD CPUs, something about mem controller shouldn't be less than 0.325v compared with the vcore....

mak aii nicee.....

wan question when the proc in fullload also no problem rite even u undervolt it?if u passed orthos shud be stable.During gaming suddenly hanged or restart wud be annoying

My system have to be rock stable since I do folding@home. If it's unstable, folding will fail. I recommend running 2 instances of Prime95 to test for undervolting stablity.

any differences if i running orthos instead of 2x prime5 as i suppose orthos = prime95 x2.
just now tried 0.88V, the system passed POST but failed to boot-in windows

undervolting recommended for laptop? i've undervolt mine around 15% using NHC - dynamic switching. now my voltage is same with sonoma LV processor. i'm using sonoma 1.86GHz , 533MHz FSB

there was once the laptop crash while on battery, other wise on AC no problems what so ever.
already stress test while on AC for 6 hours, no problem.

how to stress test on battery?

This post has been edited by gary_cheah85: Sep 13 2007, 05:22 PM

yes, i undervolted my T7200 as well and the outcome is impressive, really cooling down a lot than what i expected (i posted the setting & outcome mths ago). crash on battery? could it be just a coincidence?

I'm not so sure about orthos. I've never used it.

My laptop remains stable even it's on batteries. Maybe you should add another notch of voltage for improved stability.

the stock vcore of the e6600 is 0.85 - 1.35