Arctic Cooling Freezer 64 Pro
 

Amazingly AC has built all the heat pipes in as well as the 50 fins, and kept it below 600g, at an astonishing 528grams! ... What impressed me was the rubber silencers which hold the fan, they also dampen the sound which can be useful for all those silence people. It helps the cooler sound like a dead fly.

Link: http://www.velocityreviews.com/revie...ezer_64_Pro/1/

finally a good review for CPU heatsinks, not perfect because it lacks noise comparisons and an OC test but it has potential