GTX 770 models:
Minimum of a 600 Watt power supply
(Minimum recommended power supply with +12 Volt current rating of 42 amps)
An available 6 pin PCI-E and 8 pin PCI-E power connector
It will run and work fine for a while but you have to remember that the Corsair CX series PSU is a budget unit not built to last as long as their higher quality units. Some of the internal components are not the same quality and will age faster running them at high loads.