

Note: Either way, you cannot use an existing 32-bit version of a previous OS to perform an in-place upgrade to a 64-bit version of Windows 7, and you’ll need to format and install a fresh copy. Most programs designed for the 32-bit version of Windows will work on the 64-bit version of Windows, and if they don’t, you can always use Windows XP Mode (read my “ How to Install Windows XP Mode on Windows 7” article). So if you plan on using Windows 7 on a computer with more than 3 GB or RAM, I would strongly suggest to use the 64-bit version. Basically, the 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system. The Windows 7 installation disc package includes both 32-bit and 64-bit versions of Windows 7. You need to decide whether to install the 32-bit or 64-bit version of Windows 7.

