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Windows & Other OS Discussion & Support Discuss all versions of Microsoft Windows and any other operating system, and get support if you need it.

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Old Sep 6, 2007, 03:01 AM   #1
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Running a 64bit program on a 32bit os

Is that possable?

I only ask because Unreal 3 is coming out in November. I'll be buying it. But it's coming out with both 32bit and 64bit versions. The 64bit version will have better textures.

I do not want to buy a 32 bit version for my current XP machine then have to re buy a 64 bit version when I upgrade to my new machine.. Though I'm thinking that will be the case anyways..

I know 32 bit programs can run for the most part fine on a 64bit os.. But never heard of it the other way around.

Please advise
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Old Sep 6, 2007, 03:05 AM   #2
USB 3 dot oh
 
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System Specs

Yes. 64bit runs both 32 and 64bit programs.

The only problem you run into is when a program needs a 64bit driver, and if it only has 32bit it wont work. As well with Vistax64 if the driver isnt digitally signed, it can be a pain in the ass.

Ignore this

Last edited by ChaosMinionX; Sep 6, 2007 at 05:29 AM.
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Old Sep 6, 2007, 05:24 AM   #3
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I think you misread Mr. Spock's post

I don't think it will work, I think the 64 bit program will only work if all the drivers are for 64 bit and that won't be the case with a 32 bit OS.... but you knew that didn't you!

It makes me happy as I have XP64 on one macine and Vista HP 64 on this one and my Crossfire rig ...is it going to be DX10? .... I'd be sucking pondwater there
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Last edited by PandaZ3; Sep 6, 2007 at 05:47 AM.
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Old Sep 6, 2007, 05:28 AM   #4
USB 3 dot oh
 
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System Specs

Yep I read it wrong, too many numbers lol....

No you cannot run a 64bit program on a 32bit OS.
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