Sapphire Pro Duo ( FuryX x2 dual GPU ) - water cooling , dual bios- Freesync technology , support LiquidVR , support XDMA CrossFire ( no external connectors required ) , TrueAudio HDMi with dedicated PAP ( Programmable Audio Pipeline ) to reduce CPU load - 28nm , 8Gb 4096bit HBM ( High Bandwidth Memory ) , 128RoPs , 1024Gb/sec memory transfer ; 16384 GigaFLoPs,  512GT/s texture fill rate. , 8192 stream processors , 512 texture unit , core clock : 1000mhz with boost ; HDMI+3xDisplayPort ( upto 6x displays via displayport MST hub ) - require 2x8pin power connector - full retail pack