product details his ati radeon hd 4890 turbo + 1gb ddr5 pcie general device type graphics adapter enclosure type plug-in card interface type pci express 2.0 x16 width 1.6 in depth 9.7 in height 4.9 in processor / memory graphics processor / vendor ati radeon hd 4890 clock speed 900 mhz ramdac clock speed 400 mhz video memory installed 1 gb technology gddr5 sdram 256-bit features ati stream technology, avivo hd technology, integrated hd audio controller, ati crossfirex technology, ati powerplay technology, video transcoding (avt) video output max resolution (external) 2560 x 1600 api supported opengl 2.1, directx 10.1 max monitors supported 2 tv interface hdtv out digital video standard digital visual interface (dvi), high-definition multimedia interface (hdmi) hdcp compatible yes expansion / connectivity interfaces 2 x dvi-i (dual link) - 29 pin combined dvi 1 x hdmi - 19 pin hdmi type a ( with adapter ) 1 x vga - 15 pin hd d-sub (hd-15) ( with adapter ) compatible slots 1 x pci express 2.0 x16 miscellaneous included accessories 6 pin power cable, crossfire bridge cables included 1 x hdmi-dvi adapter 1 x dvi-vga adapter 1 x crossfire internal bridge