Radeon R9 270X 2GB 256-bit GDDR5 PCI Express 3.0 HDCP Ready CrossFireX Support Video Card, Core Clock: 1050MHz, Stream Processors: 1280 Stream Processors, Memory Effective Memory Clock: 5800MHz, DirectX 11.2, OpenGL 4.3, 1 x HDMI, 2 x Mini DisplayPort, 1 x DVI-I, 1 x DVI-D.