Although many new computers will come with Windows Vista already installed, many users will want to upgrade their old PC with the latest operating system.

The recommended minimum requirements for Windows Vista Home Premium / Business / Ultimate are:
  • 1 GHz 32-bit (x86) or 64-bit (x64) processor
  • 1 GB of system memory
  • 40 GB hard drive with at least 15 GB of available space
  • Support for DirectX 9 graphics with:
  • WDDM Driver
  • 128 MB of graphics memory
  • Pixel Shader 2.0 in hardware
  • 32 bits per pixel
  • DVD-ROM drive
  • Audio Output
  • Internet access
However you can run the Windows Vista Upgrade Adviser to scan your PC to see if it meets the minimum requirements above and check individual hardware components. If any compatibility problems are noticed you will then be notified of them in advance.
Ian, Mar 6, 2008