The Business edition of Windows Vista supports up to two physical CPUs, This edition targets the enterprise segment of the market: it comprises a superset of the Vista Business edition.
Additional features include support for Multilingual User Interface (MUI) packages, Bit Locker Drive Encryption, and UNIX application-support.
All 32-bit editions of Windows Vista, excluding the Starter edition, support up to 4 GB of RAM.
The 64-bit edition of Home Basic supports 8 GB of RAM, Home Premium supports 16 GB, and the Business, Enterprise, and Ultimate editions support 128 GB of RAM.
Starter Edition comes with some locale-specific desktop wallpapers not found in other editions of the operating system.
Most 32-bit programs can run natively, though applications that rely on device drivers will not run unless those device drivers have been written for 64-bit Windows.
Unlike that decision, however, Microsoft was also forced to withdraw the non-compliant versions of Windows from the South Korean market.
This decision resulted in Microsoft's releasing "K" and "KN" variants of the Home and Professional editions of Windows XP in August 2006.
As a continuance of these requirements, Microsoft released "N" and "KN" variants of some editions of Windows Vista that exclude Windows Media Player, as well as "K" and "KN" editions that include links to third-party media player and instant messaging software.
"N" editions of Windows Vista require third-party software (or a separate installation of Windows Media Player) to play audio CDs and other media formats such as MPEG-4.