I just built an AMD2800+ with Asus a7n8x MB. 2-256 corsair 3500 ddr. I am using a Thermalright SLK800A heatsink with a Thermaltake 80mm 5000rpm fan that moves up to 70cfm for cooling. All in an aluminum case with 5 case fans. The problem is I am getting CPU temps in the upper 60's. Averaging about 68C just in the bios setup. The MB temp is 40 or more degree's cooler, running in the mid twenties. I though ok too much artic silver. I removed some and the temp shot up to 80C. I added more back on and am down to 68 again. How can I get this thing cooled down? Would a copper shim help? More arctic silver?