NVIDIA's Linux Driver On Ubuntu Is Very Competitive With Windows 8
The GiMark and TessMark OpenGL 3 performance in GpuTest was similar between the Windows and Linux drivers while the Nouveau Gallium3D driver failed to function for these tests.
The Plot3D performance with the NVIDIA Linux driver came up shy of the NVIDIA Windows 8 driver while the Nouveau performance was obviously in shambles.
The Furmark performance was competitive between the two operating systems.