What is the highest watt PSU i need?

Agonylord52

Honorable
Jul 5, 2012
21
0
10,510
Hey everyone!
Just wanted to ask for advice on which level of PSU to get for the system Im planning on building.

I want the Evga Supernova Series, gold certified, but am unsure as to what power level, be it 650, 750, or 850 watts.

My system will be built thusly:
Asus z170 deluxe mobo
Corsair vengeance lpx 2x8gb 3000mhz ram
Intel i7-6700k processor
Noctua nh-d15 cooler
Samsung 950 pro 256gb m.2 os drive
2 western digital black 4tb drives
Gtx 980 ti gpu

Any help is appreciated! Thanks!