A short clip showing gaming performance at 4K resolution (3840x2160). Monitor is Samsung U28D590D, it is 28" TN panel with 1ms response time at 60Hz via Display Port 1.2.
PC Specs:
Motherboard: Gigabyte X79-UD7
CPU: Intel i7-3930K @ 4.6GHz 1.392v | 1.40v in BIOS
RAM: 16GB Corsair Dominator GT @ 2133MHz 9-11-10-27 1.50v
GPU: 3 x GTX TITAN 6GB @1150MHz/3100MHz
Monitors: Samsung U28D590D 28" 4K 60Hz
SSD: Samsung 840 Pro 256GB
HDD: WD RE Enterprise 2TB @7200rpm 64MB Cache
PSU: Corsair AX1200