Is 800 MHz the minimum requirement for a computer to be considered Windows Vista compatible?
Yes, 800 MHz is one (1) of the minimum requirements for upgrading your desktop PC or notebook, from Windows XP to Windows Vista. I received this information from Microsoft.com's, "Windows Vista System Requirements" page or section, whatever you want to call it. (NOTE: Windows Vista is not compatible with Windows 95, Windows 98, Windows ME, Windows NT Workstation 4.0, and Windows Server 2003 Student Edition) For more information on Windows Vista system requirements click on the link below, or copy and paste the link into your URL web browser: http://www.microsoft.com/windows/windows-vista/get/system-requirements.aspx