3.99Gb ram out of 4Gb on 64bit OS

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Joined
2 Feb 2006
Posts
375
Location
Chepstow, Wales
Have a Gigabyte GA-990FXA-UD3 board and Windows XP Pro 64bit OS and have tried Windows 7 64bit...
both times it showed all 4Gb of ram.
Now after a bios update it shows only 3.99Gb out of 4Gb.....
Anyone have any idea why?:confused:
 
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