Wow, I'm really liking this HP. With seti@home, I will sometimes pause it because I have it set to run all four cores at 100%, and I admit that I'm a little leary to crank it on high all the time just yet. Irrational, I know - but I'm so used to my other computer overheating that I'm once bitten and all.
Anyway, the pausing is only temporary, and it will start back up again on its own without me even noticing. I cannot tell the difference in performance. It's excellent! No noticeable increase in fan noise when the cores at 100%, and no slow down with any of the other stuff that I'm doing (seti@home won't hog allocation, but it's still fantastic). Money well spent, IMO.