980 ti? Anyway, if you want to absolutely max out games immediately get 2 970's for SLI, because while the 980 is a nice card that overclocks well and runs ridiculously cool and quiet, at ultra settings in at least a few recent games it struggles to maintain 60 fps at 1080p in anything other than just in-game benchmarks. And with DSR, you're not limited to 1080p, but can use either 1440p or 4k resolutions for rendering the game which is then adjusted to fit your display's native resolution. DSR is great, just wish there was some way to resize text like subtitles and whatnot.
Or I guess you could get 2 980's depending upon your graphics preferences and budget.