Radeon R9 300 cards will support HDR and FreeSync through HDMI, AMD looks to 5K in 2016 - Neoseeker
Amazon.com: AMD Radeon R9 280X 3GB HDMI PCI Express Video Graphics Card for Apple Mac Pro, outperforms ATI Sapphire Radeon HD 2600, 4870, 5770, 7950, 9000, 9800 Gigabyte : Electronics
AMD FreeSync is Now Official and Should Be Open For Everyone - 3D Vision Blog
Solved: Freesync "not supported" when everything is set up... - AMD Community
Amazon.com: AMD Radeon R9 280X 3GB HDMI PCI Express Video Graphics Card for Apple Mac Pro, outperforms ATI Sapphire Radeon HD 2600, 4870, 5770, 7950, 9000, 9800 Gigabyte : Electronics
MSI AMD Radeon R9 280X Video Card - Pangoly
Only some AMD Radeon GPUs will support FreeSync displays | TechSpot
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