I have a NEC computer rated at P75 90 or 100. Intel says the processor have a core freq. of 50, 60, or 66 Mhz. Is the clock doubling on the Chip? If I have a non MMx rated at CPU 3.3 Vdc with the same core freq. can I use it on this board? I suspect a 133 has a core of 66 (66x2=132) could I use it on this board?