asus eah4870x2/htdi/2g radeon hd 4870 x2 2gb 512-bit gddr5 pci express 2.0 x16 hdcp ready crossfire supported video card model brand asus model eah4870x2/htdi/2g interface interface pci express 2.0 x16 chipset chipset manufacturer ati gpu radeon hd 4870 x2 core clock 750mhz stream processors 1600 (800 x 2) stream processing units memory memory clock 3.6ghz ( 900mhz ddr5 ) memory size 2gb memory interface 512-bit memory type gddr5 3d api directx directx 10.1 opengl opengl 2.1 ports hdmi 1 via adapter dvi 2 tv-out hdtv / s-video out general ramdac 400 mhz max resolution 2560 x 1600 crossfire supported yes cooler with fan power connector 6 pin / 8 pin dual-link dvi supported yes hdcp ready yes features features shader model 4.1 support hdmi 1.3 output: built-in multi-channel 7.1 surround audio over dvi-hdmi adaptor packaging package contents eah4870x2/htdi/2g driver disk user's manual hdtv cable power cable dvi to vga/d-sub adapter dvi to hdmi adapter crossfire bridge s-video to composite adapter cd wallet