@Grnfinger

Nice job. I gave up trying to get 3.9GHz stable & tried to optimize voltages and memory @ 3.8GHz. I think there's a limitation in my settings that are preventing me from hitting 3.9GHz and since I can't hit 500FSB for 4GHz, the 100MHz increase didn't seem worth all the headache. That extra .5 multiplier is key I see.