2016-12-09, 11:16
I am using a GeFore GTX 970 and it can play 4K without any problems. I guess even a GTX 960 or a 1060 could be an option. Regarding the rest of the components, I have a Core i7-5820K (6 cores, 12 with HyperThreading), an Intel SSD 730 series (I made this setup at the beginning of 2015), 16 GB of DDR4 Ram (Corsair Vengeance LPX 4x4GB DDR4 2666MHz CL16 Black), a GA-X99-UD3 motherboard (there are newer ones, like UD4). Since you are using it for other intensive tasks, a 6 core CPU would really be good.