Intel Sandy Bridge Looks Good On Mesa 9.1
The CoreBreach racing game hasn't seen much performance change since Mesa 8.0, but at least there are no regressions with 9.1-devel to be released officially later this month.
Similar to the Ivy Bridge benchmarks, the Doom 3 (id Tech 4) performance is rather flat across the tested releases.
The ETXreaL game is faster with Mesa 9.1 on the Core i5 Sandy Bridge system.
Nexuiz is slower since Mesa 8.0.5 due to multi-sample anti-aliasing (MSAA) having been implemented for Intel Sandy Bridge by Mesa 9.0.