Undervolt Stability test?

How can i test the stability of my undervolting. With Prime95 i am stable all the way down to .95 on my T7200. Does being plugged in affect your undervolt stability?

 

In theory it shouldn't, in practice it might.

You could go ahead and try wPrime mentioned here by Gophn. Schedule it to run on an hourly basis or something in Windows and leave your laptop on overnight.

 

it might. your power management settings might clock down your cpu down to 1 ghz max when you are on battery power. i was just running orthos stress test on a computer, and it wouldn't go past 800 mhz (amd processor) until i changed power settings to max performance.

you should also run two instances of prime 95 to test both cores and this should be done at least overnight.

 

well, i know it was running at full frequency, and i think i had prime95 running on both cores (cpu was at 100, but i set affinity using -1, -2 after the target address in the shortcut)

i will try wprime. hopefully it will crash so that i know when it doesn't i will actually be stable

 

New prime has support for multicore so you dont need to run 2 seperate instances.

As for the battery power concerns. Its not going to be a problem if it lowers your clock speeds, but if it lowers your voltage you would have a problem.

Im really sure thats what its doing is lowering clock speed + voltage when it does that because clock speed alone does not really change power use that much its the voltage that matters, and it lowers the clocks so that its safe to lower the voltage.

So the question is, will the system notice that its already been undervolted and not go below a certian level, or does it just drop by a certian amout of voltage regardless wich may cause a crash.

Testing it will be the easiest way to know