If you have not heard of Thermalright they make some of the most unique and powerful CPU coolers on the market today. They really specialize in heatsink design, a lot of their coolers perform great without fans. Most of them don't even ship with fans. Their latest offering is the IFX-14 (Inferno Fire eXtinguisher), which features an extremely large surface area (140mm x 120mm), 4 large 8mm heatpipes, and a very unique back-side dual heatpipe heatsink.