asus features 2nd generation 55nm gpu solution world’s fastest ddr5 memory on board ( 3.6ghz ) asus splendid: watching movies on pc is as good as on top-of-the-line consumer television asus gamer osd: real-time overclocking, benchmarking and video capturing in any pc game! asus video security online: keep an eye on your home at all times no matter where you are asus smart doctor: your intelligent hardware protection and overclocking tool. graphics gpu features ati® radeon® hd 4870 pci express & pci express 2.0 support hdmi 1.3 output: built-in multi-channel 7.1 surround audio over dvi-hdmi adaptor ati crossfirex™ : plug-and-play ati crossfirex technology with up to quad-gpu support. microsoft directx 10.1 and shader model 4.1 support opengl®2.1 support hdcp compliant i/o specifications pci-express 2.0 hdtv-out dvi * 2 d-sub hdmi hdcp compliant