Like its predecessors Windows NT and Windows 2000, Windows XP comes in multiple flavors, at differing price-points, and aimed at different markets. Here's the breakdown, from least complex (and expensive), to most:
Windows XP Home Edition (32-bit CPUs)
Windows XP Professional (32-bit CPUs)
Windows XP 64-bit Edition (for Intel Itanium CPUs)
Windows Server 2003, 4 versions (32-bit and 64-bit CPUs)
Now let's break this down a bit more with a little discussion of each version. Following that you'll find several tables comparing features of the various versions.
As the name suggests, Windows XP Home Edition is the home-oriented member of group. The idea of Home Edition is an ambitious one: to create an ...