GeForce GTX 780 Ti vs. Radeon R9 290X 4K Gaming
 

It's time to take the GeForce GTX 780 Ti and Radeon R9 290X and see what kind of gameplay experience we can get on an Ultra HD 4K display. We saw AMD very much outpace NVIDIA at these 4K Ultra HD resolutions previously. We will find out which one dominates the super-high-resolution gaming scene.

http://www.hardocp.com/article/2013/...90x_4k_gaming/