I am currently running my P4 1.6a at a 145fsb using the highest voltage my board allows. At 1.625 in the bios I am really only feeding the chip a vcore of about 1.60. Should I flash to the latest bios and try to stretch the limits of the cpu, or be content to stay here? I think the chip would need at least 1.65v to run at 150fsb. How much voltage do you feel comfortable giving your cpu?