Re: 4GB of RAM tunning in windows xp professional xp sp2 with 32bi

Dear Alvyn,

This what happen to me, I read the article from Microsoft and they said it
can be done.

At least I'm getting migrane :)

"Alvyn" wrote:

Dear John

I saw that all is saying "NO" to support of memory more than 4GB in 32Bit OS.

Can you please advice as I am confused on this when I read this statement
found in :
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx

"Physical Address Extension. PAE is an Intel-provided memory address
extension that enables support of up to 64 GB of physical memory for
applications running on most 32-bit (IA-32) Intel Pentium Pro and later
platforms. Support for PAE is provided under Windows 2000 and 32-bit versions
of Windows XP and Windows Server 2003. 64-bit versions of Windows do not
support PAE."

Correct me if I am wrong. I read the above statement as -> PAE can be
supported in Windows 2000 & 32bit of WinXP & Win2003 Server. So long as PAE
is enable in these OS, it can support up to 64GB of Physical Memory for
applications running on 32bit Intel Pentium Pro & later platform.

So can I presume that if I installed 8GB of memory with a Quad Core
processor, I can fully make use of the rest of the available memory in
running application like Photoshop & 3DS MAX up to a maximum of 64GB if I
have /PAE switch in boot.ini?

If I am wrong, can you please rephrase it so that I can have a better
understanding on what this statement is talking about.

Thanks

Alvyn

"John John (MVP)" wrote:

Windows XP doesn't fully support PAE and the 4GT RAM Tuning doesn't
really have anything to do with physical memory (RAM), it affects how
the Virtual Address Space is alloted between user mode processes and the
kernel-mode components, you should remove these switches from the
boot.ini file. Due to hardware addressing needs Windows XP 32-bits
cannot fully utilize 4GB of RAM and there is no way to overcome the
limitation.

John


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