Video Memory 4GB GDDR5 Engine Clock up to 1210MHz with boost Memory Clock 1650MHz (6.6Gbps) Memory Interface 256bit DirectX Support 12 Bus Standard PCIE 3.0 Standard Display Connecors DL DVI-D/ HDMI/ DisplayPort x3 Feature Support OpenGL Support CrossFireX Technology Support ATI Stream Technology Support ATI Eyefinity Technology Support ATI Hypermemory Technology Display Support VGA Output DVI Output DL DVI-D DisplayPort DisplayPort x3 HDMI On Board TV Output HDTV Output HDCP Support Support Maximum Resolution VGA DVI 2560x1600