nouveau
Intel Core i5-4690K testing with a Gigabyte Z97X-Gaming 7 and eVGA NVIDIA GeForce GTX 760 4096MB on Ubuntu 15.10 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1512046-HA-NOUVEAU2751&sor&grr&export=pdf.
Xonotic
Resolution: 1920 x 1080 - Effects Quality: Ultimate
Xonotic
Resolution: 1920 x 1080 - Effects Quality: Ultra
Phoronix Test Suite v10.8.5