It is the first version in the flight simulator series to be released on DVD-ROM. It includes a graphics engine upgrade as well as compatibility with Windows Vista, having been marketed by Microsoft as the most important technological milestone in the series to date. Microsoft Flight Simulator X, also known as FSX, is the latest version of Microsoft Flight Simulator after Microsoft Flight Simulator 2004. 256 MB RAM (for Windows XP SP2) or 512 MB RAM (for Windows Vista)ġ4 GB hard drive space (15 GB for Deluxe Version)ģ2 MB DirectX 9.0c compatible video card 1024 x 720 screen resolution or higher