Everything We Know about the NVIDIA GTX 680
Table of Contents
- Kepler GPU Architecture
- GPU Boost & Adaptive V-Sync
- Antialiasing Solutions
- SLI & Multiple Monitor Gaming
- Benchmarking in Brief
The currently popular antialiasing solution is MSAA, which renders the screen at 200% or higher resolution, then down samples the image. However, this technique chews up video memory exponentially: 2x MSAA doubles the memory usage, 4x MSAA quadruples it, and 8x MSAA octuples it, making it an impractical solution for most gamers seeking solid performance.
The GTX 680 employs a new technique, FXAA, which locates edges in a frame based on contrast detection, then smoothes out the jagged edge through post-processing. FXAA’s ability to smooth edges is comparable or superior to 4x MSAA without the additional memory usage, and it works on transparent geometry, such as foliage. FXAA can be enabled through the NVIDIA Control Panel to work with hundreds of games, regardless of age.
If you’re looking for sheer quality, then the 680′s new TXAA technique, which is designed for direct integration into game engines, comes in two flavors. TXAA 1 offers visual quality on par with 8x MSAA with performance comparable to 2x MSAA, while TXAA 2 offers image quality that’s superior to 8x MSAA, with performance comparable to 4x MSAA.
The following games, engines, and developers have committed to offering TXAA support: MechWarrior Online, Secret World, Eve Online, Borderlands 2, Unreal Engine 4, BitSquid, Slant Six Games, and Crytek.