I have the e8500 E01 and im going for 4.5ghz or 4.0ghz, i can push to 3.5ghz stock cooling but i am not leaving it like that due to the temp. I like buy(.)com and compusa(.)com. Cooler Master Hyper N520 looks nice and the ZEROtherm Core92 CPU Cooler. Im trying not to spend to much. What would be your best recommendation ,or experiences. Thanks