are you kidding Jack Clark my GTX 1080 handles 4K 60 in gta v and crisis ultra (on both) pretty well... but then again mine is a founders edition OCed to 2114mhz and water cooled with a 500mhz memory OC
I don't know how the heck a, 1080 can game at 4k.....? It will play most games ultra 4k well, with the more demanding ones at atleast high settings at 4k