Solved: 2.5 GB RAM... Suppose to be 3 GB

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Anoman05

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I recently built a computer for myself and one for my brother. They are almost identical computers both running XP. I started out with 2GB each. I recently decided to purchase another GB for each computer. So I bought (2) 2X 512MB so I could keep the Dual Configuration. I installed them both into my computer and my brothers. Then I checked the basic info on each computer. My brothers says it has 3GB as it should, however mine only says it has 2.5GB. Do I have a faulty RAM? or is there a setting that I have to change. I am very new to building computers, so any help would be appreciated. Oh and all the memory is Corsair.
 
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Your brother's PC probably has a seperate video card with it's own memory while your PC has built-in video which is taking 512mb away from your system ram.
 

Anoman05

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Sep 11, 2008
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I am not sure what a board video is. Both machines have Asus P5N-D motherboard, Intel Duo Quad Core 6600, and Geforce 8800GT. Both machines are almost identical except for the DvD drive and the Harddrive, so it seems odd that the memory works on one and not the other.
 

Anoman05

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Our video cards are made by different companies so that could be the problem. I will try taking out the new RAM and see if it says I have less than 2GB.
 
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If the MB and Video cards are the same, then one of the 512mb sticks of ram was probably not installed correctly or the ram slot is faulty.
 
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