northbridge is the MCH overvoltage? I set the FSB overvoltage to +0.15v when I had the FSB at 400. I didn't know how high was good or what was too high so I never put it any higher.
i will Not go through the hassle of installing approved drivers just to run 3dmark06. i'll just go without being on the list. If they can't approve more than 1 driver set then it isn't worth my time.