ASUS R9 280X DirectCU II Specs | TechPowerUp GPU Database
AMD RADEON toxic R9 280x 3GB DDR5 Graphic Card /Apple Mac Pro 3.1/ 4.1/ 5.1/ PC | eBay
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