Does your GeForce GTX 780 Ti card use one 75-Watt 6-pin and one 150-Watt 8-pin PCI Express supplementary power connectors or does it use two 150-Watt 8-pin PCI Express supplementary power connectors?
The OCZ600SXS2 only has one 75-Watt 6-pin and one 150-Watt 8-pin PCI Express supplementary power connectors.