2pistolpacker

It doesn't matter which cpu you install, NVidia recommends 24 amps for the PCI-E slot. After some research on your parts, the Nvidia 8500 GT will draw 18 amps alone, that leaves almost nothing for the rest of the system. This doesn't take into account voltage drop at peak power demand or the inefficiency of a generic power supply. Your power supply was made for older systems that drew power from the 3.3v and 5v rails. Modern systems draw the bulk of their power from the +12v rails, this is why modern power supplies are designed with multiple high output +12v rails.

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