Phoronix published a review on the AMD's Radeon R9 270 Is Far From Perfect On Linux
A quote from the article:
A Red Hat employee working on Fedora QA has shared his experience using an AMD Radeon R9 270 graphics card under Fedora with both the open-source RadeonSI driver and the closed-source Catalyst driver. For both drivers, the AMD R9 270 is "far from perfect" on Linux.AMD's Radeon R9 270 Is Far From Perfect On Linux @ Phoronix
