GF 9800GX2 640M 1024 MB DDR3 DUAL DVI XT Shader Clock: 1600 MHz Memory Clock: 2.05 GHz Clock rate: 640 MHz Dual Link DVI - Supporting digital output up to 2560x1600: Yes (Dual) Chipset: GeForce 9800 GX2 Memory: 1.0 GB Bus Type: PCI-E 2.0 Memory Type: DDR3 Memory Bus: 512-bit Output: HDMI w/ HDMI upgrade kit (included) Highlighted Features: Vista , HDCP Ready , RoHS , SLI ready