AMD Radeon Performance Preview On Linux 3.8
Starting with the Nexuiz benchmark, the results were surprisingly quite mixed. For three of the graphics cards, the frame-rate is now much lower with the open-source Radeon Gallium3D driver when using the drm-next kernel. For the other graphics cards, the performance was basically unchanged.
OpenArena didn't see any performance changes out of the drm-next Radeon code.