XFX Radeon HD 4890 1 GB DDR5 PCI Express Dual DVI Video Card General Features: ATI Radeon HD 4890 chipset 800 stream processing units 850 MHz GPU clock 1 GB DDR5 memory 256-bit memory interface 3900 MHz memory speed DirectX 10.1 support 24x custom filter anti-aliasing (CFAA) and high performance anisotropic filtering Quad mode ATI CrossFireX multi-GPU support for highly scalable performance PCI Express 2.0 support Dynamic geometry acceleration Game physics processing capability ATI CrossFireX Technology ATI Avivo HD video and display technology Dynamic power management with ATI PowerPlay technology ATI Stream technology Dual slot fansink Connectors: Two (2) dual-link DVI-I ports One (1) S-Video (7-pin mini DIN) Two (2) 6-pin Power connectors Dimensions: 1.5 x 4.5 x 9.5-inches (H x W x D) Regulatory Approvals: FCC CE UL WEEE