Asus exclusive 0db thermal solution can satisfy silent environment demand of home theater enjoyment gigantic 1gb ddr3 memory on board for better gaming performance and video resolution graphics engine ati radeon hd 5450 bus standard pci express 21 video memory ddr3 1g effective memory size 1024 mb engine clock 650 mhz memory clock 800 mhz 400 mhz ddr3 memory interface 64 bit crt max resolution 2048 x 1536 dvi max resolution 2560 x 1600 d sub output yes x 1 dvi output