Sapphire rX-590 - Nitro+ Special edition - 8Gb Oc edition with nitro glow RGB LED + aluminum backplate - with fuse protection + Fan iC control + Black Diamond Choke 4 + dual 95mm fan with double-ball bearing + quad copper heatpipes + black polymer cap + nitro fan check, quick connect, cooltech, freeflow, boost + FRTC (frame rate target control) + Intelligent Fan Control III + dual bios - support liquidVR + XConnect ( external GPU solution for NB ) + eyefinity + Freesync technology + XDMA CrossFire ( no external connectors required ) + HDR - 12nm , 8Gb 256bit GDDR5 , 32RoPs , 256Gb/sec memory transfer ; 7119 GigaFLoPs, 223GT/s texture fill rate , 2304 stream processors , 144x texture unit , core clock : 1469/1560mhz ; memory : 8400mhz , DVi-D+ 2x HDMi+ 2x DisplayPort 1.4 ( upto 6x displays via displayport MST hub ) - require 8+6pin power connector