I currently have a $12 masscool fan for my e6600 that i picked out at the last moment. That was back around Christmas. Now, summer is rolling around in Texas, and my idle temps went up to around 40-45*C and 3ds max rendering puts them at 65*C! I am willing to spend 30-40$$ on a quality heatsink with AS5 that will bring my temps down about 10*, and leave room for OCing next winter. 8)