1GB GDDR3 video memory PCI Express 2.1 x 16 bus interface GPU Clock 625 MHz Memory Clock 1200 MHz 64bit Memory Interface 3rd Generation Tera Scale Engine Shader Model 5.0ATI Radeon Power Play Accelerated Video Transcoding Encoding & Upscaling Microsoft Direct X 11 Support 1x HDMI 1x Dual Link DVI 1x VGA The ASUS HD 6450 graphics card offers superb performance for vivid graphics. Containing the latest Direct X11 the card is able to support ultra-realistic game characters enhanced speed & true to life special effects. AMD supported App Acceleration is used to accelerate everyday work applications whilst the HD 6450 delivers a smooth high quality 3D video playback experience.brbr An efficiently designed heatsink passively cool the low profile HD 6450 Silent Series so absolutely no sound is produced while operating. This ensures a quiet environment perfect for hushed gaming & multimedia enjoyment via home theatre PCs & multimedia centres. With a clock speed of 625 M Hz & up to 1GB of DDR3 memory on board the HD 6450 Silent Series displays the latest in multimedia entertainment with ease. brbr Native HDMI Dual-link DVI & D-Sub connections are housed in a low profile bracket for added convenience.br