A 120mm fan is set within the body of the Apack Zerotherm Nirvana 120 heatsink, and it spins at a speed of 700-2600RPM (as manually controlled). A pair of blue LEDs illuminate the translucent impeller blades.
Made mostly of aluminum, with a small copper base connected by four heatpipes to the rest of the heatsink, the Zerotherm Nirvana 120 heatsink is dark nickel plated. It looks glossy and brilliant with the blue LEDs reflecting off its surface, but it's murder for picking up fingerprints. Apack's Nirvana 120 heatsink weighs 628grams and has a surface area of 6748 square centimeters.
FULL STORY @ FROSTYTECH (http://www.frostytech.com/articleview.cfm?articleID=2225)