Mailing the story:
4K Ultra HD Graphics Card Testing On Ubuntu 14.04 LTS
With the release of Ubuntu 14.04 LTS "Trusty Tahr" right around the corner we have out today some new benchmarks of various AMD Radeon and NVIDIA GeForce graphics cards when testing them with the latest Linux GPU drivers on Ubuntu 14.04 at 4K (3840 x 2160).