"Over the past week on Phoronix have been several featured
articles looking at the performance of SteamOS with the proprietary
AMD/NVIDIA graphics drivers: 22-Way Comparison Of NVIDIA/AMD Graphics
Cards On SteamOS, 4K AMD/NVIDIA High-End GPU Comparison On SteamOS, and
Is SteamOS Any Faster Than Ubuntu 15.10 Linux? One of the frequent
questions that have come up since then is how the open-source driver
performance compares to that of the binary blobs on SteamOS, so here are
some of those benchmarks."