Set the strap to auto, NB voltage to 1.3 (yours is a little on the high side for a P45), GTL's to 0.680 for the CPU AND 0.670 for the MCH, FSB Termination voltage to 1.2, PLL to Auto

Trying to increase the FSB to that level without changing the GTL's is nigh on impossible.

Oh, and leave the SATA Voltage alone...