Specifications graphics engine rx 580 video memory 8gb gddr5 stream processor 2304 units boost clock 1350mhz memory clock 2000mhz 80gbps memory interface 256bit bus standard pcie 30 display connectors dl dvi dhdmidp x3 form factor atx cooler 2 slot fan sink power connector one 8 pin pci express power connector crossfire support yes software crossfire ope