product information : hightech ati hd4870x2 2.0 2gb 512-bit gddr5 pci-e hightech ati hd4870 x2 pci-e 2.0 2gb 512-bit gddr5, microsoft directx 10.1 and opengl 2.1 support, supports crossfirex and avivo hd technology, max. resolution 2560x1600, (full hd 1080p) features dual dvi-i / d-sub / hdmi / hdcp. platinum packing.