This a 145W graphics card and a 88W CPU.
Alllowing for over clocking and reasonable loading on the power supply, a 500W supply would still be plenty.
If you did want a 750W model, get the EVGA Supernova B2 750.
Any of these would be fine too:
Any XFX 550W or 650W supply
Rosewill Capstone 550
Antec HCG 520 or 620 (with or without an M on the end)