I don't think so, as it did it even at 201 (!) Mhz FSB. And yes, I tried voltages up to 1.45 core, 2.0 memory, running at DDR2-677 (It's DDR2-800), upping the motherboard voltages. It's definitly a BIOS problem, as F2a retained settings, but is highly unstable - it keeps reseting even at default...