It looks like two GeForce Titan Blacks in SLI can do one 4K screen. So if you did two monitors each with its own SLI, it would work for about $4000 in GPUs as o

It looks like two GeForce Titan Blacks in SLI can do one 4K screen. So if you did two monitors each with its own SLI, it would work for about $4000 in GPUs as of right now.