I still don't get this craze with 4K. Unless you are professional photo/video editor you don't need 4K. Unless you want to play WoW, LoL, DotA2, CS:GO or similar in 4K. But then you would want higher FPS which you can't get on 4K. There is no single GPU that can run new games in 4K on 60 FPS, and SLI scales pathetic at best. There are 2 IPS 1440p monitors with 144Hz and they are expensive as hell, and those are the ones most people want.