daswilhelm :
i wouldnt try it, not with two 12v rails. get yourself a decent brand of psu (seasonic, antec etc) with one 12v rail. also, is there still a need to run a dedicated physx card? i would think the 760 should be able to handle it.
Incorrect. The PSU is
plenty for that pair of cards. The 650 uses 43w at peak power, and the 760 peaks at 165 watts. You could run two 760's off that PSU.
I am unfamiliar with that particular model from kingwin, but kingwins other models are good units. (Mach 1, lazer and stryker receiving jonnyguru review scores of 8, 8.5, and 9 respectively)