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hi guys,a query please,my xp is amd athlon dual core 4200 with 2 gig ram,i have never had more than 2 gig in it,my friend has offered me another 2x1 gig sticks to make mine 4 gig,another friend said that my xp will only pick up 3 gig ??????? i have no idea about this,i thought i would ask first rather than waste the 2 gig in this pc,much appreciated for any input ...

Hello there,If your XP is 32 bit operating system it will only reconise 3.25 gig RAM.

You could at least fit an extra gig.

If it is a 64 bit operating system it will reconise 4 gig and higher.

JB.

To use 4 gigs of ram on a 32 bit Win XP or Vista, you have enable the Physical Address Extension

Here's a explanation of it here:

http://www.microsoft.com/whdc/system...AE/PAEdrv.mspx

Here's how to do it here:

Physical Address Extension (Windows)

This one shows how to enable PAE and edit the boot ini file...

Enable Physical Address Extension (PAE): Core Services

thanks a lot guys for the explanation,i`m sorry i forgot to say that my xp was a 64 bit,great now i can add the 2 gig as well ......

That is brilliant.

64 bit is the way to go.

JB.