Windows 7 32-bit vs 64-bit

Computer users who want to buy Microsoft’s latest operating system Windows 7
have two choices to make. First they need to decide on the edition of the operating system. At least three different editions are available for retail users, they are: Windows 7 Home Premium, Windows 7 Professional and Windows 7 Ultimate. They also have to decide whether they want to install a 32-bit or 64-bit edition of the purchased operating system. This decision does not have to be made during the purchase as the Windows product key is valid for both 32-bit and 64-bit versions of the selected edition.
Windows 7 32-bit vs 64-bit