I'm running my two month old Core i-7 D-920 on an MSI Eclipse M.B; 12 gb G-Skill DDR3 1333 RAM, 2x MSI oc'd GTX 280s, with a couple of WD Caviar Green 1TB HD's in Raid 0, in an Antec 900 Mid-tower case which has excellant air circulation and looks georgous to boot. This rig is rock solid at stock clock rates, on Vista Ultimate 64/sp1. I have not as yet, over clocked the system since I am running the Intel retail package CPU cooler but. I am interested in doing so. There were no aftermarket socket 1366 cpu air coolers when I ordered the parts. What is the best performing air CPU cooler (don't want liquid), for overclocking to say: 3.5 to 4 ghz range?