Pros: This thing kept my new Xeon X3370 at or below 46°C while running benchmarks overclocked from 3.0GHz to 4.05GHz, and isn't even very loud. Intel says the chip is rated up to 71.4°, so I think I'm safe...

Cons: As I said, it's a beast. It's huge! It occupies just about every bit of space available, leaving about 1/4" to my power supply and about 1/8" to the case door. With the fan on the upstream side ('cause I already had a case fan on the downstream position) I have to unclip the fan to get at the memory, but it goes on and off easily.

Overall Review: If you want to stay cool while OC'd, this thing will take care of you.