Oh, you want to play games at, what is that, ~6K?
Yeah, not gonna happen right now, I'm afraid. I don't think there is a card that even supports that resolution--and would probably be some years before one could effectively push playable frames even when they do support it? But maybe I'm wrong.
You can certainly run 2 4K displays, but not as a single display/resolution (assuming that is what you want).