Hi, I'm going to upgrade my videocard from an ATI HD 5850 to an NVIDIA GTX 760, and I just want to make absolutely sure before I make the purchase that my PC is compatible. By comparing specs requirements of the ATI HD 5850 and GTX 760, I'm almost sure that it will. Both require a pair of 6 pin connectors. Power Supply must be, at a minimum, 500w for both, mine is 600w. But, again, since I'm no expert, I want to be absolutely sure.