From the same system as the recent Ubuntu 12.04.1 LTS vs. Ubuntu 12.10 performance preview, here are some benchmarks of Ubuntu 12.10 when upgrading to the latest Git state of Mesa 9.1-devel and Linux 3.7 pre-RC1. This testing was done out of curiosity to see if there's any worthwhile Sandy Bridge performance improvements in this newer code to make it interesting for those Intel Linux desktop users wishing to live on the bleeding edge.
The code was obtained from Git but soon there will likely be new packages for users to try from the Ubuntu-X PPA, per Canonical's plans to push out newer drivers quicker.
View the results on OpenBenchmarking.org for this Ubuntu 12.10 stock vs. Ubuntu 12.10 Git updated graphics comparison with several OpenGL benchmarks. Embedded below are just a few of the results.
Continue with the results and to see the rest of the system logs/information for this Core i5 laptop running Ubuntu 12.10. You can also compare your system's performance to these results in a simple and automated manner by simply running phoronix-test-suite benchmark 1210085-RA-INTELGITL87.