As part of some other test results to be published at a later date on Phoronix, some brief Nouveau benchmarks were conducted on Ubuntu 12.10 compared to Ubuntu 12.04.1 LTS. The graphics card was a NVIDIA GeForce 9600GSO.
For some of the Linux OpenGL benchmarks, the Nouveau performance is down on Ubuntu 12.10 over Ubuntu 12.04 LTS, but this may come down to Unity/Compiz being slower in Ubuntu 12.10. More tests of different graphics cards on open-source Gallium3D drivers plus from other desktops will be shared on Phoronix in a later article. Today's Nouveau 12.10 results are available on OpenBenchmarking.org.
Again, continue looking at the results on OpenBenchmarking.org.