so i tore apart some old pc's took the heatsink/fan from the CPU and replaced the stock ones. Running 1 stick at 325Mhz and .75v. going to drop the voltage down 1-2v. if i had a couple of smaller heatsinks i would run them at 400Mhz. The fans are running off an old AT power supply. i left the switch attached so i can turn off the fans with a button push.