@BrunoCornelsen, Could you do the benchmark again but by selecting only one of those cards from user preferences?
@rbx775, In general with GPU sometimes this can be a few seconds faster in Windows or Linux. It may depend on the driver, the Linux distribution, scenes, for example.
@pableaux, in message #50 in page 3 I explain why this scene is heavier than other benchmarks for GPU.
On Linux my GTX 960 the nvidia monitor shows it running at 100%-99% all the time. Anyway if you refer to BMW27.blend scene of this forum, in my case also that scene is approximately three times faster than GPU benchmark from this thread. Just for testing, you could remove the volume cube and you will have a faster render. But anyway that volumetric cube helps to add render time so that the benchmark does not end very fast on powerful cards. Without that volumetric cube, still the materials used stress more GPU than other benchmarks (comparing the ratio with CPU).
I see AMD GPUs listed, so I wanted to leave this here.
AMD GPU with OpenCl will only work with more recent daily builds. In the official 2.79 release, the Normal Map, Blackbody, Invert color, and other nodes will cause final renders to crash. Thankfully, these issues are now fixed. I do not see how Blender can wait until 2.80 for another official release.
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