difference between windows xp x64 edition and others . 64 stands for what???

sparks2000
sparks2000 used Ask the Experts™
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what is the difference between windiws xp 64 and 32 or 86 and same for windows xp x64 edition and the other editions ,also what are the different editions of windows 2003 server,how i know what is the edition of my Operating System?
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Most Valuable Expert 2013
Commented:
If you're asking the question, you have a 32 bit version.  XP 64 bit versions were not widely sold with systems.  There's 3 different platforms:

1.  x86 (which is 32bit)
2.  x64 (which is 64 bit but can run 32 bit operating systems)
3. ia64 (which is 64 bit and cannot run 32 bit operating systems)

ia64 is not widely used - you don't have it - if you did, you'd know it because you'd really know what it was and have specifically purchased a computer that ran it.
Top Expert 2007
Commented:
        Hi sparks2000
              *You can find a detailed comparison here http://blog.360.yahoo.com/blog-pFAFVrY1crT1XYKeJvs-?cq=1&p=1298
              *By the way, 32 bit XP can not utilize physical ram equals/more than 4 GB. 64 bit can utilize more than 4 GB RAM.

Regards

Commented:
the difference is hardware (the processor architecture).
the definition : http://en.wikipedia.org/wiki/64_bit
A hardware based comparison : www.pcstats.com/articleview.cfm?articleID=1665
A software based comparison : news.softpedia.com/news/Windows-versus-Windows-or-32-bit-versus-64bit-1349.shtml

there is a lot and lot of stuff to read about this. Generally 64 bit is faster for bigger applications (applications with big memory contents and big instructions).

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