GTX 980 Ti

Yes, for now. but a 1080 ti will run like 59% faster than 980 ti, but if you don't have enough money that will do. i have a 960 Ti SCC and i can run most games pretty nicely, so the 900 series is still doing well. especially the 980 ti because it is the top tier of that series. its also the minimum you need to run a VR (Set by Nvidia)