Maybe it's because it's three cores running at 2.2GHz (that's not exactly blistering), but even when bogging down in Crysis, the hottest of the cores runs up to 44 celsius. I'm not exactly unhappy with those numbers.

And also, when I bought my Athlon X2 5600 Brisbane (two cores at 2.9GHz each), I installed the AMD heatsink that came with the new processor, and it would only run 800RPM (the current AVC runs 1800). I had to re-do the thermal paste and reinstall the AVC 'cause with the AMD heatsink, the CPU was, at idle, running around 45 celsius. Reinstalled the AVC that came with that computer and it dropped to 30 celsius.

EDIT: By "the current AVC" I mean the AVC in my last computer, though this one runs about the same.