Hi Chuck-
Windows XP Home is 32 bit. So is Windows XP Professional. But we do make
Windows XP 64 bit edition for high-end computing needs. Here is a good
breakdown of when 64 bit is the right choice:
Windows XP 64-Bit Edition Top 5
Large Memory Support
Windows XP 64-Bit Edition supports up to 16 GB of RAM and
16 TB of virtual memory, enabling applications to run faster when working
with large data sets. Applications can preload substantially more data into
virtual memory, allowing rapid access by the Intel Itanium processor.
Optimized for the Intel Itanium processor family
Windows XP 64-Bit Edition has been optimized specifically
for the Intel Itanium processor and benefits from its key features, such as
the Explicitly Parallel Instruction Computing (EPIC) design and increased
floating-point performance.
Multiprocessing
Windows XP 64-Bit Edition is designed to support
multiprocessing capabilities for maximum performance and scalability,
supporting up to two symmetric Intel Itanium processors.
Interoperability
Windows XP 64-Bit Edition provides a rich platform to
integrate both 64-bit technical applications and 32-bit business
applications using the Windows on Windows 64 (WOW64) x86 emulation layer.
Same programming model
Developers with 32-bit skills will be comfortable and
quickly productive in the Windows on Itanium environment, finding it
virtually identical to the development environment for 32-bit Windows.
http://www.microsoft.com/windowsxp/64bit/evaluation/top5.asp
--
Michael Moore
Technology Specialist
TS2 Team
Microsoft Corporation
www.connect-ms.com/msts2
This posting is provided "AS IS" with no warranties, and confers no rights.
"Chuck" > wrote in message
...
> A simple question?
>
> What is the difference between the Windows XP 32-bit
> Edition and the 64-bit Edition?
>
> Is the 32-bit the Home Version, 64-bit the Pro version?
>
> Thanks in advance
>
> Chuck
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