Prime95 brings my core i7's temperatures to 85 degrees, and cosmology@home brought them to roughly 80. Rosetta@home is operating at less than 70 on a full load! I knew that physics calculations were harder for a cpu, but I didn't recognize than they made such a temperature difference. Has anyone else experienced this?

Computer architecture 101: Stalls. Probably the memory controller or floating point execution units are busy. The rest of the process/CPU is waiting for those things for several processor cycles at a time.

On a side note, 85 degrees C is pretty high for an i7. Running 8 cores with multiple projects, I don't break 60. What kind of heatsink do you have? Perhaps you should upgrade it if you're going to be working that CPU so hard.

Another reason why I crunch Rosetta only.

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