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4 GB RAM IN XP HE


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#1
Hosk

Hosk

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According to Microsoft, Widows XP HE can use 4 GB of RAM. When I installed it, my SI recognizes 4 GB of Physical RAM, 2.87 GB of Available Physical memory and 2.00 GB of Total Virtual memory with 1.96 GB of available virtual memory.

I have heard that regardless of amount of RAM, applications can't access more than 2 GB unless the /3 GB switch is set in the Boot.ini file.

My Boot.ini file has :

[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect

Should the /3 GB switch follow fastdetect? And will it make any difference. I am trying to speed up Photoshop CS2.

Thanks, Hosk

Edited by Hosk, 31 July 2006 - 09:09 PM.

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#2
Neil Jones

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All using /3GB does is allow the computer to use a Virtual Memory page file bigger than 2Gb. It should also in theory allow the computer to work with 3Gb of memory for the programs you run.

It doesn't alter the fact that XP has issues when you start approaching more than about three and a half gig of memory, nor does it change the fact that XP can only work with up to 4Gb of memory.

Again in theory, one should be able to use /fastdetect with the /3gb switch.
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#3
Tru Techie

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well xp has a max capability of 3GB without stuff going downhill. if u give it 4GB it will only slow it down, cause it cant handle all that. and dont even get 3GB, 2GB in dual channel, either DDR 400, or DDR2 800, depending on your cpu/mobo, will work beautifully. and is better than 3GB NOT in dual channel

Edited by Tru Techie, 01 August 2006 - 05:27 AM.

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#4
Hosk

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Thanks, Neil and TT. /3GB did expand the available RAM and all is well.
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