For some Sunday benchmarking, here are some results of the different anti-aliasing levels available within NVIDIA's binary Linux graphics driver when using a NVIDIA GeForce GTX 680 "Kepler" graphics card.
The available anti-aliasing (AA) levels exposed for the GeForce GTX 680 by the NVIDIA 302.17 Linux graphics driver are listed below.
2x AA: 2x Multi-Sample Anti-Aliasing
4x AA: 4x Multi-Sample Anti-Aliasing
8x AA: 4x Multi-Sample, 4x Coverage Sample Anti-Aliasing
8x AA: 4x Super-Sampling, 2x Multi-Sample Anti-Aliasing
16x AA: 4x Multi-Sample, 12x Coverage Sample Anti-Aliasing
8x AA: 8x Multi-Sample Anti-Aliasing
16x AA: 4x Super-Sampling, 4x Multi-Sample Anti-Aliasing
16x AA: 8x Multi-Sample, 8x Coverage Sample Anti-Aliasing
32x AA: 8x Multi-Sample. 24x Coverage Sample Anti-Aliasing
Those are the different combinations of multi-sample anti-aliasing (MSSA), coverage sample anti-aliasing (CSAA), and super-sampling anti-aliasing (SSAA) that are supported for the high-end Kepler graphics card for the binary Linux graphics driver. The NVIDIA AA mode can be easily adjusted from the nvidia-settings utility.
The NVIDIA GeForce GTX 600 series graphics card was running with the Intel Core i7 3770K system and Ubuntu 12.04 LTS on the software side.