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Memory And Windows Xp

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3 replies to this topic

#1 genthore


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Posted 28 December 2007 - 10:24 AM

My ASUS mobo can handle 8 GB of ddr2 memory but I was reading that windows 32 bit systems will not recognize more than 4GB. Is that really true? Does it just not recognize it or does it not even use it? I dont care if it doesnt tell me that it there but I will care if it isnt able to use the memory. I currently have 2 GB installed but I want to add more but before i do i want to know if it is a waste of money to install more than another 2 GB.

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#2 dc3


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Posted 28 December 2007 - 11:28 AM

Actually that 4GB figure is not true, the 32bit system will only recognize about 3.5GB.

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#3 hamluis



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Posted 28 December 2007 - 11:29 AM


http://www.tomshardware.com/forum/149387-4...allowed-windows IMO, the last comment by Alex Nichols is the one that I deem worth reading.


#4 spaceship9


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Posted 28 December 2007 - 12:16 PM

XP 32 bit can use a max of 2GB safely
if you use XP Pro, you can use the /3GB switch to use a bit more up to 3-3.5GB
If you have XP Pro, go into your bootdrive (C:\ probably) then go to tools menu -> folder options -> view -> uncheck "hide protected operating system files"
In C:\ now you'll see boot.ini somewhere.. open it in notepad
You'll see something like

[boot loader]
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect

make it

[boot loader]
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /3GB

it may work but it's not an official supported feature and i wouldn't use it :thumbsup:
the Asus mobo supports more because if you use an x64 based OS, you can use a LOT more then the x86 amount :flowers:

and windows wont recognize it but people have said thirdparty programs sometimes do see all of the 4GB. but regardless, even with the switch on, you loose 800mb-1GB of that 4GB anyway because XP wont simply use it..

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