Mixing Windows XP x86 and x64

March 8, 2009 at 06:44:11
Specs: Windows XP
As we know no matter how much RAM we have, Windows x86 can only recognize 3GB. So I've been thinking of start using Windows XP x64.

I'm wondering can Windows XP x64 be mixed with x86 drivers and x86 applications?

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March 8, 2009 at 07:21:15
The drivers will be different, of that there is no doubt. If you do install both operating system, even if the drivers were compatible, you would still have to install them twice.

The applications should work under both operating system but you will still have to install them twice in order to establish the correct registry entries.

There is no reason why both installations should not be able to share the same data files.


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March 8, 2009 at 08:22:23
To properly do so you need three partitions. One for each OS and one for the shared apps. You install the app to one OS and then when you install to the 2nd os you overwrite the first app install. Both OS's look for the same place for the app.

BTW its 4gig not 3gig that can be addressed by a 32bit OS.

A one sentence question will result in a one sentence answer.

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March 8, 2009 at 11:27:38
Is your system 64-bit compliant?


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Related Solutions

March 8, 2009 at 13:04:17
Do you really need more than 3gb. Very few home XP users even need 2gb. More RAM does not automatically mean more speed, if that's what you are thinking.

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March 8, 2009 at 19:14:02
I'd agree with aegis1, unless you're doing something extreme (like 3D-CAD rendering or working with massive databases), more than 2GB won't do a lot of good, even for gaming. And 32-bit programs have been noted as running slower on WinXP x64 (if you plan to run only WinXP x64), with several of them not even installing due to having 16-bit installers. Also, whatever hardware drivers you have will need to have 64-bit equivalents (as StuartS mentioned).

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March 9, 2009 at 04:56:40
Thanks all for your reply. Argh I didn't realize only certain motherboards would support Windows x64 not all modern motherboards as I thought. My hardware is not suitable for x64 then.

Right. For average Windows XP users, 2-3GB RAM is plenty. There are no reasons to have anymore.

As for me, I'm running SAP. SAP is a monster when it comes to RAM and disk space. That's the only reason I'm thinking of make use Windows x64 so I could have more RAM.

Also, seems like a mess with mixing x86 & x64 applications if I took Windows x64 path.

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