PowerColor AMD Radeon R9 280X OC 3GB GDDR5 DVI/HDMI/2Mini DisplayPort PCI-Express Graphics Card AXR9 280X 3GBD5-T2DHE/OC Engine Clock: 880 MHz Video Memory: 3GB GDDR5 Bus: PCI-Express 3.0 x16 Max. Resolution: 4096 x 2160 Input: 6pin PCI-E Power Connector, 8pin PCI-E Power Connector, Output: DVI-I, HDMI, 2x Mini DisplayPort Form Factor: ATX