Sapphire Radeon HD 7970 OC with Boost 3GB DDR5 DL-DVI-I/SL-DVI-D/HDMI/DP PCI-Express Graphics Card 11197-03-40G 1 x Dual-Link DVI-I 1 x Single-Link DVI-D 1 x HDMI 1 x DisplayPort 950/1000(Boost) MHz Core Clock 5700 MHz Effective Memory Clock