What psu wattage would I need to run two gtx 970s in sli

[Super_]

I will either be using a i7 5820k or a 5930k as the other main wattage consumers.

 

[Mason1204]

I would recommend between 650-750 Watt. To get as close as possible, I would recommend going to the link below and inputing all of your build parts to get the most accurate psu wattage.

http://outervision.com/power-supply-calculator

 

[ak47jar3d]

A quality 750w or better can handle that configuration. If your going to Overclock, you will need no less than 850w.

 

[syked3]

A good 750W PSU is what I'd recommend. Here are my recommendations:
EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply
XFX ProSeries (Black Edition) 750W Fully Modular 80+ Gold Power Supply
Seasonic S12G-750 750W 80+ Gold Certified Wired Power Supply

 

[Onus]

For stock operation, 650W should be sufficient. For overclocking, you'll want 750W. You want a high quality PSU, such as one made by Seasonic (their own, XFX, EVGA GS, some Antec) or Super Flower (EVGA G2 or B2, Kingwin Lazer, Rosewill Capstone).

 

[littleleo]

To run two GTX 970s in SLI a good quality 700w power supply is recommended, but I'd go with above that with a 750w to 850w.