Quick tests of Mesa from this weekend by Michael Larabel for Phoronix.com testing with regard to the Counter-Strike: Source performance boost from correcting the max WM thread count for Intel Gen6 Sandy Bridge GT2.
Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1207291-SU-INTELSAND75