Just make sure you clock your gpu's as high as you safely can. The few games I have been playing that I have ran at 4K have given really poor performance results with my system. At the moment the only game I can run at 4K is Elite, everything else I have to run at either 1440p or 1600p so that I can maintain at least 45fps at all times. Have been tempted to grab a 3rd 780Ti but I am going to wait till March next year and hope Nvidia release the big maxwell cards by then.
