XFX Video Card  HD685XZCFC Chipset: Radeon HD6850 Engine Clock: 775 MHz Video Memory: 1GB DDR5 Memory Clock: 4.0 GHz Bus: PCI-Express 2.1 x16 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: Dual DVI; HDMI; 2x Mini DisplayPort