XFX ATI Radeon HD6870 1 GB DDR5 2DVI/HDMI/2x Mini DisplayPort PCI-Express Video Card HD687AZNFC Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 500 Watts Minimum Power Supply Requirement Connectors: Dual DVI; HDMI; 2x Mini DisplayPort Thermal: Fansink Support Microsoft Windows 7 Video Memory: 1GB DDR5 Memory Clock: 4.2 GHz Memory Interface: 256-bit Chipset: Radeon HD6870 Engine Clock: 900 MHz Bus: PCI-Express 2.1 x16 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Chipset: Radeon HD6870 Engine Clock: 900 MHz Video Memory: 1GB DDR5 Memory Clock: 4.2 GHz Memory Interface: 256-bit Bus: PCI-Express 2.1 x16 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: Dual DVI; HDMI; 2x Mini DisplayPort Thermal: Fansink Support Microsoft Windows 7 Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 500 Watts Minimum Power Supply Requirement