Phoronix: Ultra HD 4K Linux Graphics Card Testing

If you've been eyeing a purchase of a 4K "Ultra HD" TV this holiday season and will be connecting it to a Linux system, here's the information that you need to know for getting started and some performance benchmarks to set the expectations for what you can expect. This article has a number of AMD Radeon and NVIDIA GeForce benchmarks when running various Linux OpenGL workloads at a resolution of 3840 x 2160.

http://www.phoronix.com/vr.php?view=19416