18-Way GPU Linux Benchmarks, Including The Radeon RX 460 & RX 470 On Open-Source
With Unigine Valley, the Radeon R9 290 didn't run into its recent DRM regression issue and thus was able to perform as expected. The Radeon RX 460 for Unigine was the slowest card tested and a great deal slower than the GTX 950. Here the RX 460 was delivering the same speed as the Radeon R7 260X.
A look at the performance-per-Watt with Unigine Valley shows all of the NVIDIA Maxwell/Pascal cards being much more efficient than the AMD hardware up through Polaris.