Thanks. I did change my OC and next reboot it recognized it at 1600 RAM in the OC tab. Thing now is, on the main Bios tab it says it's operating at 833, and I can't OC it past 1600 in the OC tab (should be OC able to 1800 per mobo specs). The manual doesn't state how you get it to OC to 1800. Anyone have any ideas?