The xfx ati radeon hd 5450 fully supports microsoft directx 11 which enables real time rendering with ultra realistic characters and incredible 3d imagery and offers everything you need for gaming and hd home entertainment in one package chipset radeon hd5450 engine clock 650 mhz video memory 1gb ddr3 memory clock 1066mhz memory interface 128 bit bus pci express 20 x16 ramdac 400 mhz max resolution 2560x1600 connectors vga dvi hdmi thermal fanless support microsoft windows 7vista support ati e