azzazel_99 :
Considering the new numbers that have come out today the 1080 is barely faster than a 980ti so i would opt for 980ti sli for a great price over the 1080. Pick up another 980ti and wb and call it a day. The 1080 is not as impressive as eeryone thought it would be although it is the new fastest kid on the block
1080 was 30-40% faster than the 980ti in every single benchmark in 4k. Lower resolutions don't really matter - either card can handle them easily. This is a substantial increase in one generation. SLI 980ti would be faster, but create way more heat and use way more electricity $$$ (225W x 2 = 450w for just the 980ti SLI vs 180w for single 1080).
42% faster @ 4k than the 980ti in Ashes of the Singularity
32% faster @ 4k than the 980ti in Battlefield 4
31% faster @ 4k than the 980ti in GTA V
31% faster @ 4k than the 980ti in Hitman
39% faster @ 4k than the 980ti in Project Cars
31% faster @ 4k than the 980ti in Tomb Raider
33% faster @ 4k than the 980ti in The Division
34% faster @ 4k than the 980ti in The Witcher 3