From the cooler master site...
If you have been annoyed by the noise, then you might be excited when you see this newly developed Low Noise Series cooler, HHC-L61. HHC-L61 is equipped with copper heat sink (with dual heat pipes) and silent fan (note: 3000 rpm) which provide low noise environment with minimal loss of performance to cope with the cooling effects for high-speed CPU nowadays.
Fan Dimension 60 x 60 x 25 mm
Rated Speed 3000 RPM
Air Flow 14.13 CFM
Rated Voltage 12 VDC
Heat Sink Dimension 80 x 60 x 44 mm
Rja (ºC/W) = 0.6 (FC - PGA)
retail available at :
http://www.tcwo.com/cgi-bin/webc.cgi/st_prod.html?p_prodid=2360
