Gigabyte hd experience series powered by amd radeon hd 5450 gpu integrated with the first 1gb ddr3 memory and 64 bit memory interface features dual link dvi i d sub hdmi support crossfirextrade and avivotradehd system power supply requirement 400w specification chipset radeon hd 5450 directx 11 opengl 41 core clock 650 mhz shader clock na memory clock 1100 mhz process technology 40 nm memory size 1 gb memory bus 64 bit card bus pci e 21 memory type ddr3 dig