PowerColor AMD Radeon HD 7990 6GB GDDR5 2DVI/HDMI 2-Mini DisplayPort PCI-Express Video Card AX7990 6GBD5-2DHJ Chipset: AMD Radeon HD 7990 Engine Clock: 900 MHz /925 MHz Video Memory: 6GB GDDR5 Memory Clock: 1375 MHz x 4 (5.5 Gbps) Memory Interface: 2x 384-bit Bus: PCI-Express 3.0 x16 Max. Resolution: 4096 x 2160 Connectors: DVI-I, DVD-D, HDMI, 2x Mini DisplayPort