AMD Sapphire Radeon R9-280X 3Gb PCI-Express Graphics Video Card – local338
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AMD RADEON R9 280X 3GB for Apple Mac Pro w Power Cables [4k, High Sierra Ready] - $279.00 | PicClick
Flashing R9 280X for boot screens/PCI System Information | MacRumors Forums
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R9 280x flashed with EFI
AMD Radeon R9 280X 3GB for Apple Mac Pro w/ Power Cables 4K, METAL, Mojave Graphics/Video Cards Computer Components & Parts
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MSI HD R9 280X 3GB Upgrade for 1,1-5,1 Apple MAC PRO 4K, METAL, Catalina Support | eBay
AMD Radeon R9-280X OC 3Gb PCI-Express Graphics Video Card – local338
5 AMD R9 280X 3GB Graphics Cards in one Mac Pro 5,1: OpenCL monster utilising CUBIX PCI-e Xpander - MacFinder
Expert Help Needed MSI R9 280X Flushed for Boot logo | MacRumors Forums
AMD R9 280X for Mac now Available: Great value OpenCL powerhouse for Final Cut Pro & Adobe Suite - MacFinder
