I recently purchased the Dell 30Hz 28" 4k UHD panel. While AussieTimmeh was down for a visit, a few of the local members got together to put it through its paces. We wanted to see how each game handled 4k UHD resolutions, how they would perform with a single Radeon R9 290, and how 30Hz impacted the gameplay experience. In total we tested: Battlefield 4, DiRT Showdown, Natural Selection 2, Guild Wars 2, Torchlight II, Lego Batman 2, Pac-Mac Championship Edition DX+ and Tom Clancy's H.A.W.K.
Embedded below is the YouTube playlist of all the videos. There is a lot of analysis, and a lot of good commentary by all of the members. Some games worked perfectly, some faired okay, and others were simply unplayable. Come see how your favorite game performed, and whether 4k UHD was preferred over 1080p, Eyefinity or 21:9.