Benchmark Reviews posted a review on the 2560—1600: GeForce GTX 770-780 vs Radeon HD 7950-7970
A quote from the article:
Very recently Lenovo loaned us their 30-inch ThinkVision LT3053p IPS LED-Backlit LCD Monitor for review. While the AH-IPS display panel was impressive, its size really made us wonder about how much impact it would have on PC video games. Before this behemoth display went back to Lenovo, I decided to test it on some of the most recent graphics cards from NVIDIA and AMD. In this article Benchmark Reviews tests frame rate performance at 2560×1600 for the Radeon HD 7950 against GeForce GTX 770, and Radeon HD 7970 against GeForce GTX 780.2560—1600: GeForce GTX 770-780 vs Radeon HD 7950-7970 @ Benchmark Reviews