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zinglebarb

you can enable PAE and get the 4 gig on some systems if you run 32 bit xp iirc

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

marioc89

Originally Posted by elpmek

Which version of Windows??? 'cos it makes a difference

I'm running xp pro.

marioc89

Originally Posted by GhastMaster

I like this explanation. I don't have much understanding of why it is though.

Reader Question: Maximum Memory in 32-bit Windows Vista - Windows Vista help

It seems the limit is 4gb for xp. Practically though, other parts of your system will use some of the ram and limit xp to even less.

Memory Limits for Windows Releases (Windows)

Well, if I'm running xp then all memory should register. The graphics card has 512 gig itself so it shouldn't need to use any of the memory from the system board. What else would need to use some of the system board memory?

marioc89

Originally Posted by Jelly Bean

I would check the RAM first.

Check wich speed is in first slot if these are rated at diffrent speeds.Check RAM is seated correctly.

Try each stick of RAM individualy incase one or two sticks are bad.

Is any RAM dedicated to a GPU?This will give a lower reading.

When you boot the computer how much RAM shows on post screen?

Is RAM registered in BIOS?

All memory is working fine.
What is GPU?
When it post, it shows all memory...4 gigs.
There's only 2 gigs per stick so if one isn't working then it shouldn't read 2.7 gigs.

marioc89

Originally Posted by zinglebarb

you can enable PAE and get the 4 gig on some systems if you run 32 bit xp iirc

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

I heard of using PAE...let me check out your link and I'll get back you as far as questions or something.

GhastMaster · 09:45 PM

Originally Posted by marioc89

All memory is working fine.
What is GPU?
When it post, it shows all memory...4 gigs.
There's only 2 gigs per stick so if one isn't working then it shouldn't read 2.7 gigs.

GPU is Graphics Processing Unit. It's a chip on your Graphics card that looks a lot like a motherboard's northbride or some older CPUs. It is sometimes used synonymously with video card(because it is a nice acronym???).

It is good that at post it shows 4 gb of RAM. This would indicate that your motherboard recognizes it and can probably use it.

The reason it is showing less than 4 gigs is because Windows XP Pro 32 bit can only use 4 gb of RAM. You have a total of 4.5 gigs of RAM(GPU 512mb + RAM 2gb*2gb = 4.5gb) on your system. However, since you are using XP, it cuts this down to 4gb. It will then take 4gb and minus the 512mb from the video card, which will leave you with 3.5 usable by XP. You should be at 3.5gb. Why you are not is beyond me.

Test each RAM card individually on your Mobo and make sure they are in the correct slots for that motherboard.

marioc89

Oooooh ok! Let me tinker with it GM and I'll get back with you via this thread.