Sapphire Radeon HD 6950
With the Unigine Tropics test, which is representative of the workload to be experienced by Unigine's forthcoming OilRush game, the Radeon HD 6950 is putting out 72 frames per second at a resolution of 2560 x 1600.
With Unigine Heaven, which is without a doubt the most demanding OpenGL scene for Linux now, is pushing 32 FPS at 1920 x 1080.