Overclocking in theory..

[Sampsa]

I've always wondered if (excluding cold bugs) if there is not a best temperature at which to overclock a given processor at a given voltage. I know typically the colder the better but maybe there is a sweet spot, this may be something worth investigating with these AMD chips.

So far with Phenom II X4 it looks like the colder the better. We saw -242 Celsius measured from base of F1 EE copper container (1 - 2 mm from bottom surface):





and around -230 measured from AMD Pete Hardman's container where thermal sensor is milled right in the middle of bottom surface so it is basically touching CPU heatspreader. Under load temperature was -225 Celsius:



Since the system was running just fine at these temperatures I wouldn't be surprised if Phenom II X4 could work at -250 and -260C range. Next step is to design more sophisticated solution to use liquid helium to cool down the CPU to even lower temperatures than we achieved in Las Vegas.

[SNiiPE_DoGG]

Since the system was running just fine at these temperatures I wouldn't be surprised if Phenom II X4 could work at -250 and -260C range. Next step is to design more sophisticated solution to use liquid helium to cool down the CPU to even lower temperatures than we achieved in Las Vegas.

what do you think that would be? is it possible to set up a closed loop of pressurized liquid helium to make it colder?

[Sampsa]

what do you think that would be? is it possible to set up a closed loop of pressurized liquid helium to make it colder?

Yes or "double container" where is inner pot filled with liquid helium and some kind of lid adding pressure and outer pot filled with liquid nitrogen.