ATI Radeon HD 5670 1GB DDR5 PCI Express (PCI-E) DVI/VGA Video Card w/HDMI & HDCP Support ATI Radeon HD 5670 1GB DDR5 PCI Express Video Card General Features: ATI Radeon HD 5670 graphics processing unit 400 stream processing units 775 MHz core clock 1 GB GDDR5 memory 128-bit memory interface 1000 MHz memory clock PCI Express 2.1 x16 interface ATI Stream technology ATI PowerPlay ATI CrossFireX multi-GPU technology ATI Avivo HD video display technology