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 Post subject: WinXP 32-bit & 4GB of RAM
PostPosted: Sun Mar 27, 2011 12:47 pm 
Willamette
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I know that in many cases, WinXP 32-bit versions will see 4GB of RAM as only 3 or 3.5G of RAM. But does this pose a threat to the OS or possibly cause data corruption?

I have a friend who wants to dual-boot his PC with WinXP Pro and Win7 Pro (for compatability of some older software he may still use that doesn't work well in 7). Anyway, he wants to go to 4GB of RAM (from 2GB) but is concerned with stability since his version of XP is only a 32-bit version.

Opinions? Any potential problems here? (He has SP3 to install with XP Pro and will do all the updates from MS as well).


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Sun Mar 27, 2011 12:56 pm 
Bitchin' Fast 3D Z8000
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I never had an issue....

I'm not sure what he's concerned with though...what you describe is exactly the point of XP mode is Win 7 Pro.


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Sun Mar 27, 2011 1:39 pm 
Malware specialist
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Stability shouldn't be a problem. Remember that the operating systems will be installed on different partitions and won't be able to alter the other partition.

If it was a problem, we wouldn't be able to run Windows XP with 4GB of RAM period ;) .

Windows XP will detect 4GB (or a bit less) and Windows 7 64 bit will detect the entire 4GB, but Windows 7 32 bit will still detect 4GB or less.


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Sun Mar 27, 2011 1:46 pm 
Willamette
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thanks. Actually, now that I think of it, I did try this a long while back (but didn't do very much with it so I never really found out if it was a problem or not--hence my asking). LIke I said, my main concern was stability but apparently that won't be an issue.

What about if the system had 8GB of RAM? Would the same rules still apply?


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Sun Mar 27, 2011 1:59 pm 
Malware specialist
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cbassett01 wrote:
What about if the system had 8GB of RAM? Would the same rules still apply?


In Windows XP you would only see 4GB of it. The rest of the RAM would pretty much be a waste. However, Windows 7 64 bit could use it.


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 Post subject: WinXP 32 bit 4GB of RAM
PostPosted: Tue May 10, 2011 5:33 am 
8086
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Your coworker should have ordered 64-bit Windows 7. Lenovo even states:

Please note, a 64bit operating system is required to realize the full benefit of more than 3GB of installed memory.

They should be able to call Lenovo and get the 64-bit discs though.


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Tue May 10, 2011 7:57 am 
SON OF A GUN
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hackman2007 wrote:
cbassett01 wrote:
What about if the system had 8GB of RAM? Would the same rules still apply?


In Windows XP you would only see 4GB of it. The rest of the RAM would pretty much be a waste. However, Windows 7 64 bit could use it.


Likely not even 4GB. There is memory mapped IO, graphics cards, DMA enabled hard drives, etc.

Found in this thread: viewtopic.php?f=6&t=113190
This link: viewtopic.php?t=80222

4GB of memory is the most I'd put in an XP box, just to get as much as possible. Theoretical limit is 4GB anyway. Realistically, 3-3.5 GB.

Best bet is Win 7 64bit.

Extra memory won't hurt anything, but it won't do anything either.


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 Post subject: Re: WinXP 32-bit & 4GB of RAM
PostPosted: Tue May 10, 2011 8:29 am 
Million Club - 2 Plus
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XP has pretty low memory requirements. However, going with 64-bit Windows 7 would be the best direction. You can later add more memory so that XP and Windows 7 doesn't run like a dog.

Also, Windows 7 keys works in either 32 or 64 bit versions. So even if you purchased a 32-bit Windows 7 key, all you need is the 64-bit installation media.


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