Is this with 2D tiling enabled in DDX too ? Right now mesa 8.1 will enable 2D tiling for texture even if not enabled in the ddx. You can test without 2d tiling set R600_SURF=0 for that (default is 1). Anyway if you enable 2D tiling in the DDX too you will get a bigger boost (depends but vary btw 1% to 5% on things i tried (nexuiz arena tuxracer) compared to only 2d tiled texture)

