Was a pre-built that I upgrade alittle here and there. Guess it is stock cooling haven't upgrade that. Added Ram, EVGA Bronze 500W, SSD, and my old GPU, 6770. Wish I didn't get a pre-built and just ordered all from NCIX, but I am stuck with it now.
Will those GPUs be fine with only a 500w PSU? As for overclocking, need to read about it, never did it before.