Some Quick Gaming Numbers at 4K, Max Settings
 

Part of my extra-curricular testing post Computex this year put me in the hands of a Sharp 4K30 monitor for three days and with a variety of AMD and NVIDIA GPUs on an overclocked Haswell system. With my test-bed SSD at hand and limited time, I was able to test my normal motherboard gaming benchmark suite at this crazy resolution (3840x2160) for several GPU combinations. Many thanks to GIGABYTE for this brief but eye-opening opportunity.

http://www.anandtech.com/show/7120/s...k-max-settings