The sapphire hd 5450 graphic cards offer the most features and functionality in their class with complete directx 11 support and the worldrsquos most advanced graphics display features and technologies specification output 1 x dual link dvi i 1 x single link dvi i gpu 650 mhz core clock 40 nm chip 80 x stream processors video memory 1024 mb size 64 bit ddr3 1333 mhz effective software driver cd pci express based pc is required with one x16 lane graphics slot available on the motherboard