I did some research on the 4k monitors and there are a few that you can get 4K @ 60HZ and chroma 4:4:4 with HDMI 2. Nvidia GTX 970 or 980 should be able to output that. I’m just worry how UE4 would react to virtual monitors. Each virtual monitor would be 1920 x 1080P. May be I should just go with two 27" 1440P to make sure there is no issue. It just so much cleaner to get one monitor and split however you want. Also, it can be used as a TV if you want to watch something.