PowerColor ATI Radeon HD 6870 1 GB DDR5 2 DVI/1 HDMI/2 Mini DisplayPort PCI-Express Video Card AX6870 1GBD5-2DH Chipset: Radeon HD 6870 Engine Clock: 900 MHz Video Memory: 1GB 256-bit DDR5 Connections: 2 DVI/1 HDMI/2 Mini DisplayPort Bus: PCI-Express 2.1 x16