SCYTHESlip Stream 120mm Case Fan, 3-Pin 1200RPM

Very smooth sounding fan. See SPCR article for reviews.http://www.silentpcreview.com/article1361-page5.html has the latest roundup for 120mm fanshttp://www.silentpcreview.com/article832-page1.html is an older review that covers the slipstream fan introduction.The Scythe Slip Stream Kaze Jyuni series. They are sleeve bearing fans, but with a different design. They have nine, fairly slim blades and spokes that curve in the opposite direction (reduces harmonics). The narrow hub size also maximizes the amount of air the blades can produce while minimizing the size of the dead spot at the center where the motor sits.These are better for vertical mount. In a tower case that is usually the intake/exhaust positions and not the CPU heatsink but depending on your case and heatsink choice(s) the fan may work OK with some CPU heatsinks.I went with the NB ELOOP B12-2 for my CPU heatsink as it handles the static pressure and orientation better in this case.

These scythe are one of the highest rated fans on the market, and they are extremely quiet!

Perfect fan, replaced my one that died after 2 years. Very very quite and pposha good amount of air.

Quite fan. Used on a HTPC build.