I have notice something about this board [at least specific to mine], if I change the RAM voltage to the one defined by the RAM's manufacturer, the system hangs. So, right now with the BIOS' default voltage [1.64v], I've been messing around and have gotten to 400FSB so far. I will keep pushing it to see what is the max FSB that I can get; more than likely I will stop at about 450FSB as that is all I'm after.