DeepCool Killer Whale Heatsink Review
 

DeepCool's Killer Whale heatsink is a top-down cooler built around two critical things. It has a hefty solid copper heat spreader (base) onto which six 6mm diameter heatpipes have been soldered, and a large and potentially very quiet 48mm thick 120mm PWM fan that spins at 1000-1800RPM. The fan moves approximately 78CFM, while generating at most 53.5 dBA and at least a whisper quiet 34.8 dBA. The Killer Whale stands 140mm tall and weighs a hefty 900 grams, but if you were to replace the fan with a more compact 120mm model that height could be as little as 92mm + fan thickness.

http://www.frostytech.com/articlevie...articleID=2430