How to Benchmark your GPU on Linux
Linux is not famous for its gaming abilities and possibilities, and it is only natural that there aren't many GPU benchmarking tools available with which users can test their graphics hardware. There are however some benchmarking suites that can help you determine the various aspects of your GPU performance with precision. These are very important for the drawing of solid conclusions, technical and numerical comparison, or for the satisfaction of a plain interest on how (well) things work. Technically speaking, all of the available GPU benchmarking tools in Linux only test under the OpenGL renderer of course. While your GPU may be compatible with some versions of Direct3D, it is not possible to test this renderer under Linux. I've tested this on Ubuntu, but Debian and Linux Mint will work fine as well.
Howtoforge showing you how to benchmark your GPU on Linux.
