TropicoSuarez :
Mike_Tech :
Neither - 2x overclocked 970's would be my vote. Much cheaper and faster than 780Ti's and probably on par with the 980's for a fraction of the cost.
This guy knows what's up. I agree completely. two 980s vs tow 970s is like 10 frames difference, but way above 60 fps so you'll barely notice (or won't notice at all).
Get the 970's! Best price to performance ratio! Lowest power consumption of all the three options presented here! It's a win win since it's SLI and not Xfire.
Ive bought a 850 watt power source already will it use at-least 700 watts i know i can do it without using most of the power its just i dont want to waste the cash i spent already