The majority of graphics card websites have 'auto-checkers' which can scan your system and find the correct card. They can be found here for the following makes: AMD/ATI - http://support.amd.com/us/gpudownload/pages/index.aspx Intel - http://downloadcenter.intel.com/ Nvidia - http://www.nvidia.com/download/index.aspx?lang=en-us If you have the knowledge, we'd suggest using the manual download and install over the auto-checker, so if you know your exact graphics card make and the OS you are run