XFX Radeon R9 280X Black Edition Video Card Review - Page 7 of 8 - Benchmark Reviews @TechPlayboy
XFX Double D R9 280 Specs | TechPowerUp GPU Database
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
SAPPHIRE DUAL-X Radeon R9 280 Video Card 100373-2L - Newegg.com