The Sapphire Radeon R9 280 Dual-X OC graphics card features an 850MHz core clock with a 940MHz boost clock, 3072MB 384-bit GDDR5 memory, PCI-E 3.0, 28nm, 1792 stream processors, DirectX 11.2 support, 2x DVI, HDMI, DisplayPort and more. Backed by a 2 year Sapphire warranty.