Pros: VERY quiet. Moves ~2X more air than a 92mm fan in my AZZA case. Rubber feet are a nice touch while they last.

Cons: The rubber feet wore out after 1 year. Not too big of a problem: just used screws to mount it and there is no noise increase.

Overall Review: I bought this for an old P4 system that I got from a flea market because it was missing its exhaust fan. Plugged it in and it is SILENT, I mean SILENT. Inhereted a new core 2 duo machine from a friend who built his AZZA case with the cheapest fans possible. He had a 92mm exhaust fan in the back. I replaced it with this 80mm model because it is quiter and moves more air.