Pros: I've been using this fan as the single heatsink fan on my Megahalems. I'm at 4.0 Ghz and my temps have never been lower. Also, LOADS less expensive than any comparable performance fan. This fan would be even better on a fan controller as an hsf fan or even a case fan (it's a bit loud, but moves a ton of air).

Cons: A bit loud, but great performance/noise ratio.

Overall Review: If you're considering this as a Megahalems fan, buy it. You won't be disappointed. If you're considering this for another HS, get it.