Sapphire Radeon R7 260X: A Great Linux Graphics Card
When running Unigine Valley the R7 260X performance was a few percent faster than the more expensive Radeon HD 7850 while behind the older Radeon HD 6870 and HD 6950 graphics cards. The R7 260X was also still running much faster than the similarly priced GeForce GTX 650 graphics card.
With the open-source Unvanquished game the Radeon R7 260X was running very well for this GL3 game.
Again, to see how your system compares to the selection of NVIDIA GeForce and AMD Radeon graphics cards tested on the A10-7850K-based system, simply install the Phoronix Test Suite and then run phoronix-test-suite benchmark 1401297-PL-AMDRADEON49 for a fully automated comparison from test downloading and setup to execution and result analysis.