A:Answer The 850W power supply should probably be enough for your build. I'm using this particular power supply to power to 770 FTW cards, which are a bit older but still draw the same amount of power.
If you're worried about which PSU to get, you can use the "wattage calculator" on EVGA's website. It's found at this link.
http://www.evga.com/power-meter/
If you say that you're overclocking your CPU, then the wattage calculator will vastly overestimate how many watts you need. So I would recommend not checking that box. After you do the wattage calculator you'll also get a coupon for 10% off a power supply!
