15-Way Open vs. Closed Source NVIDIA/AMD Linux GPU Comparison
The AMD Radeon Linux testing consisted of a mixture of AMD Radeon HD 5000 and Radeon HD 6000 series graphics cards. As mentioned in the earlier article and numerous other Phoronix pieces, the open-source Linux graphics driver support for the very latest Radeon HD 7000 "Southern Islands" graphics cards is still a work-in-progress and maturing within the new "RadeonSI" driver. Radeon HD 7000 testing will come separately due to the less than complete OpenGL support at this time. For Radeon HD 7000 series users the best bet right now is just using the proprietary AMD Catalyst graphics card. With the Radeon HD 4000 series GPUs and older not being supported by the mainline Catalyst driver and the legacy Catalyst driver not working well on the latest Ubuntu Linux release, this limited the AMD testing to the HD 5000/6000 families.
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