Sapphire Radeon Nitro R9 Fury 4GB HBM HDMI/DVI-D PCI-Express Graphics Card 11247-03-40G 1 x DVI-D;1 x HDMI;3 x DisplayPort; High bandwidth memory Interface PCI-Express 3.0; Power efficiency &gt;3X the performance per watt of GDDR5 System Requirement-750 watt power supply (suggestion), 2 x 8-pin AUX power connector,4 x 8-pin AUX power connector is required for CrossFireXTM system,CD-ROM or DVD-ROM drive for installing software GPU-3584 Stream Processors AMD Freesync technology;Small form factors-94% less PCB surface area than GDDR5