80mm Antec Blue LED Fan is a great one. I've got two of these acting as an exhaust on the back system case for my new PC. 2600RPM @ 34CFM. It only cost me $8.99 + tax at CompUSA. Bought 4 of those today. It's quiet operation too.
does anyone have any other suggestion; i want a fan that will really make a difference from my stock Gateway fan and will really cool the inside of the pc