20-Way Intel/AMD/NVIDIA GPU Comparison With Ubuntu 14.04 LTS
Xonotic is easily one of the most stressful and visually impressive open-source, cross-platform games. Even without re-clocking support, at least the Nouveau driver on high-end Kepler hardware could deliver almost 60 FPS -- and still ahead of the Haswell HD Graphics from the Intel CPU.
The RadeonSI Gallium3D results fail for the more demanding OpenGL test-cases due to LLVM register allocation issues with the AMD GPU back-end with the version packaged for Ubuntu 14.04 LTS.