hmmmm sounds like your ram is bottoming, and that makes sense, at 910 mhz it's weeeelll above it's rated speeds, have you relaxed the latencies accordingly? Have you bumped up the ram voltage at all? If you want the cpu to clock higher you may have to run a different fsb/ram ratio. I don't know what the multiplier is on your chip, it's 10 right? so why is your ram running so fast, you should run your ram at a lower speed, then when your computer boots at the clock you are aiming for tighten up the latencies, because an fsb of 400 is probably out of the question so that you can run the ram at 800 megs, in 1:1. I don't understand why your ram is running at 910mhz. But I would bet that is your problem.