ATI Radeon HD 5870 1GB DDR5 PCI Express (PCI-E) Dual DVI Video Card w/HDMI, DisplayPort & HDCP Support ATI Radeon HD 5870 1GB DDR5 PCI Express Dual DVI Video Card General Features: ATI Radeon HD 5870 graphics processor 1600 stream processors 80 texture units 850 MHz core clock 1 GB GDDR5 memory 256-bit memory interface 1200 MHz memory clock PCI Express 2.1 x16 interface ATI TeraScale 2 Unified Processing Architecture ATI Stream Technology ATI PowerPlay ATI CrossFireX multi-GPU support