his radeon hd 4850 1gb gddr3 pci express general gpu radeon hd 4850 packaging retail interface pci express x16 (2.0v) max resolution 2560 x 1600 operation supported windows xp/vista specification core clock 625 stream processor 800 opengl 2.0 ramdac 400 mhz directx version direct x 10.1 low profile no memory memory size 1gb memory type gddr3 memory bandwidth 256-bit memory clock 1986 connectors dvi 2 x dvi-i (dual link) tv-out s-video hdmi capable yes feature tv tuner no cooling device heatsink/fan crossfire capable crossfirex vista ready yes hdcp ready yes