At 06:33 AM 03/01/2007, dhs wrote:
Understand. I simply do not know. I'll talk offline to some power gurus my brother-in-law works with. Good question. Wondered about this myself now that current technology is so power humgry.
That would be great. I can't find anything that really answers these questions. I did find that the 4 pin motherboard connector is generally a separate rail and powers just the CPU. So on a two 12V rail PS, that means the CPU is on one rail, and everything else is on the other rail. On a three 12V rail PS, the motherboard is on rail1, the CPU on rail2, and the six pin PCIe connector is rail3. As the number of rails goes up, it appears each additional rail is connected to a 6 pin connector. However, not all PSes work like this as the spec isn't carved in stone. And apparently the motherboard can supply 12V power to the CPU via the large power connector as well, which clouds matters. (One would think that manufacturers would want to clear this up.)
T
