Mesa 9.2 Can Boost Intel Haswell Graphics 30~40% On Linux
The Reaction Quake 3 performance is up by 39% on Mesa 9.2.
The Unvanquished game with its GL3 renderer only sees a very small rise in performance out of the soon-to-be-out Mesa 9.2 for the Intel Core i7 4770K system.
Urban Terror and Warsow also see nice performance improvements out of the new Mesa code for Intel Linux graphics.