Nouveau Kepler vs. Maxwell Performance On Linux 4.6 + Mesa 11.3-dev

So there's some additional perspective of how Nouveau is performing with the latest-generation NVIDIA hardware. See the earlier article if wanting to see precisely how these GeForce GTX 900 series graphics cards are comparing to the proprietary NVIDIA driver. Nouveau developers have been working on re-clocking support for years and it's still not perfect with not being enabled by default, only static re-clocking to a set performance state can be achieved manually, and not all of the kinks are worked out such as with the GTX 680 performing better than the GTX 780 Ti. Unfortunately, re-clocking for Maxwell is going to be even more difficult since the Nouveau developers will need to get PMU firmware access as outlined in the previous article.