What is the recomended PSU for a gtx 1080 ti and a I-7 6700k.

[Hunter Flax]

I am looking at a 850 watt psu. Any reccomendations.

 

[raisonjohn]

A good-quality 650W would be more than enough.

Corsair RM650x
Corsair - RMx 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($109.89 @ OutletPC)

Corsair RM750x (750W version because its offered at the same price as the 650W)
Corsair - RMx 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($109.99 @ Amazon)

EVGA SuperNova G2 550
EVGA - SuperNOVA G2 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($99.89 @ OutletPC)

EVGA SuperNova G3 550
EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($98.49 @ OutletPC)