4 gigs

April 13, 2011 at 00:40:13
Specs: Windows XP PRO 2002 SP2, 266 /3RAM NOW 4 RAM
I have windows xp pro 5.1 ver with sp2 . I have 3 gig ram and added 1 more to make it 4 gig. I solved the problem of system to see 4 gigs by adding /pae to the boot.ini. At startup it shows 3079 cool. But in the system info it shows 4 gigs so it sees 4 gigs problem is then now my pc is way slower than with 3 gigs. I'm stuck now on why. I've been building pc since 1988.and repairing them . So this one i'm stumped. So called techs say 4 is impossible. Unless u have 64 bit wrong..

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April 13, 2011 at 01:27:21
If u don't want any problems install xp pro sp3 64bit and don't mess with boot.ini file.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.

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April 13, 2011 at 01:37:26
My Dell laptop shows 4.0 GB installed 3.49 GB usable on Win 7 32-bit. A emachine laptop shows 4.0 GB installed 3.00 GB usable. Don't worry a bytes more or less doesn't matter.

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April 13, 2011 at 06:27:52
It is impossible to access 4GB in any 32 bit client version of Windows. Typically you will have about 3.25GB available but it is often less. If the video system is using shared RAM it can be much less. In a 32 bit client OS you have a 4GB physical address space which must be shared with RAM and memory mapped hardware which must have priority. Since hardware and RAM cannot share address space you will inevitably loose access to some RAM. Only a 64 bit OS will be able to use all 4 GB RAM.

In XP the /PAE switch does nothing useful. It's only purpose is to permit testing of device drivers with the PAE kernel. It does not allow access to more RAM and it does have a small performance penalty. It is really only of use in a server OS. You should remove it.

You should remove the extra 1 GB of RAM. It is not being used and can have a performance penalty.

Please avoid posting in all-caps. On a forum this is bad etiquette and is more difficult to read.

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April 13, 2011 at 06:44:41
This is a old discussion that has been worn out across the web.
This is a fruitless quest and pursuing it will only result in lost life span.

Hambone you need to understand the limits of 32bit addressing.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's

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