Quote Originally Posted by Particle View Post
Really? You're having better luck with Prime? I've actually been meaning to test all the various ones on Thuban. I've so far played with y-cruncher, Prime95, and OCCT.

That's because they stress different parts of the CPU more than others.

prime95 and Linpack (which includes linx and IBT) stress the CPU and execution units the most.

y-cruncher and HyperPi (nearly all the pi-based programs) stress the memory controller and cache more than the execution units.

That's why sometimes prime95 and linpack will fail instantly and y-cruncher won't. And sometimes y-cruncher will fail before prime95 and linpack.
It depends which part of the system (CPU or memory/IO) is more unstable.


As for as temperature goes, linpack seems to run the hottest on Core 2 and K10 if it is tuned correctly. (because it is just THAT well optimized)
But the exact opposite is true on Core i7 when HT is enabled. y-cruncher runs the hottest simply because HT allows it to use both integer and floating-point units at the same time (thus stressing everything).