Why would you have to drop a video card?AMD Phenom X6 1090T > i5 3570k
Coolermaster V8 > Corsair H100
Gigabyte GA-990FXA-D3 > Asrock Z77 Extreme4
Crossfire 6970 > single 6970
Had to lose a video card or buy a new psu, decided to drop a card because I've spent a ton on this already. Now for the pictures.
3570K uses less power than a 1090T, Z77 uses less power than the 990FX...
Unless you plan on overclocking past the point of reason, and even still an 850W ought to be enough.