MojoKid writes: AMD is holding an event / demo in Montreal today, offering to let anyone who likes come in, check out 4K gaming on their upcoming graphics card, and promising that the GPU will deliver performance over and above anything NVIDIA's GeForce GTX 780 can offer. 4K gaming has increasingly become popular as monitors begin to debut at that resolution and modifications to the Blu-ray standard are floated. AMD has run two tests, which it claims demonstrates this performance, BioShock Infinite and Tomb Raider. There are two caveats though. For the BioShock Infinite results, AMD doesn't specify if they're running the game with or without its alternate depth of field option. This setting has a significant impact on AMD GPU performance — a Radeon 7990 running at 1920x1080 benchmarks at 116 FPS in DX11 Ultra mode, and 106 FPS in DX11 w/ Alternate DoF. That 10% gap, if applicable here, would significantly reduce the results between the two cards. In Tomb Raider, AMD ran the test using TressFX. Again, that's a perfectly valid way to test the game. It's not a hack, a cheat, or a flaw but TressFX performs better on AMD cards than their NV counterparts.
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