Quote Originally Posted by fiveprime View Post
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.