Scythe SCVSG-1000 Setsugen VGA Heatsinks Compatible W/ NVIDIA GTX ATI HD5850 HD5870

Cons:Fan hits the sink sometimes and makes a clicking noiseExpensiveCan't mount a more efficient 25+mm thick fan for lower noise

Pros:Keeps my 1GHz core 2GHz memory 5850 at less than 60C Furmark load.Golden silent compared to the noise of the stock cooler required to keep my 5850 as cool.