Windows.vista.Ultimate.SP2.x64.DVD.Untouched.legit.ENGLISH.version

The main differences between the 32-bit versions of Windows Vista and the 64-bit versions of Windows Vista relate to memory accessibility, memory
management, and enhanced security features. The security features that are available in the 64-bit versions of Windows Vista include the
following:
Kernel Patch Protection
Support for hardware-backed Data Execution Protection (DEP)
Mandatory driver signing
Removal of support for 32-bit drivers
Removal of the 16-bit subsystem
One of the greatest advantages of using a 64-bit version of Windows Vista is the ability to access physical memory (RAM) that is above the
4-gigabyte (GB) range. This physical memory is not addressable by 32-bit versions of Windows Vista.

Depending on the version of Windows Vista that is installed, a 64-bit version of Windows Vista supports from 1 GB of RAM to more than 128 GB of
RAM. The ability to address more physical memory lets Windows Vista minimize the time that is required to swap processes in and out of physical
memory. Therefore, Windows Vista can manage processes more efficiently. This memory management feature helps improve the overall performance of
Windows Vista.
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Advantages when you install a 64-bit version of Windows Vista
Increased memory support beyond that of the 4-GB addressable memory space that is available in a 32-bit operating system
Increased program performance for programs that are written to take advantage of a 64-bit operating system
Enhanced security features
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What to consider when you install a 64-bit version of Windows Vista
64-bit device drivers may not be available for one or more devices in the computer.
Device drivers must be digitally signed.
32-bit device drivers are not supported.
32-bit programs may not be fully compatible with a 64-bit operating system.
It may be difficult to locate programs that are written specifically for a 64-bit operating system.
Not all hardware devices may be compatible with a 64-bit version of Windows Vista.