Why is my Asus P5PL2-E using 640MB of RAM (out of 4GB) ? [closed]

Posted by Tom on Super User See other posts from Super User or by Tom
Published on 2010-01-19T17:39:05Z Indexed on 2010/04/10 2:23 UTC
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Hardware

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memory

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usage

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bios

Possible Duplicate:
Windows XP and RAM 3.5GB+

I've recently installed 4GB of RAM on my server, which is running Windows XP SP2 32-bit and My Computer showed that only 3.37GB were installed. After digging Google for a bit, I couldn't find anything helpful, but I do remember reading a post in a forum regarding the motherboard using 640MB of RAM. Digging in my own BIOS, I've also found that my motherboard has also reserved that amount for its self.

Why does my motherboard reserve this memory and how can I tune it down to say 128MB?

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