ASUS ATI Radeon HD 5850 1 GB 256-bit GDDR5 DVI/HDMI/DisplayPort CrossFireX Support PCI Express 2.1 x16 Video Card EAH5850 DIRECTCU/2DIS/1GD5 &gt;B&gt;Features ASUS Exclusive Voltage Tweak Technology for up to 50% performance Up to 20% COOLER during game play and up to 35% QUIETER under idle mode than generic HD 5850 with DIRECTCU Technology Get striking visual effects and dynamic interactivity with DX11 support! PCI Express 2.1 support