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Only 3gb appearing on 4gb

Last answer on Oct 29, 2009 1:10:34 am GMT wifipen, on Oct 24, 2008 12:22:09 pm BST 
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Hello,
ive just upgraded my pc with 4gb kingston memory but in windows vista i can only see 3gb appearing what is the matter? i dont think that one of the ram isnt good as its two modules of 2gb each and if one wasnt good then it would show only 2gb and not 3gb..
please help me in this issue?

Configuration: Windows Vista
Firefox 3.0.3

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1

bm3754, on Oct 24, 2008 1:19:10 pm BST
  • +1

In theory windows vista can accept 4gigs of memory but in practice when its done only 3gigs can be seen and that doesn’t mean that it isn’t using the the 4gigs it is and nothing to worry about.

   
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2

xp, on Oct 1, 2009 8:36:09 pm BST

Buddy download service pack 1 for vista.

   
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3

JaaM, on Oct 27, 2009 7:09:42 pm GMT

Ooh!
I'M SUFFERING FORM THE SAME PROBLEM, BUT MY OS IS XP SP3??

   
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4

 zjj, on Oct 29, 2009 1:10:34 am GMT

As far as i understand it, 4 is the TOTAL limit for 32-bit operating systems.

this 4 includes your graphics memory (yes, even dedicated 'on card' memory) and a bit for the bios.

4 gig ram + 1 gig fx card ~= 3 gig of your 4 gig ram can be 'seen' by windows. if you have sp1 installed it will even report 4 gig, it knows it's there, it just can't handle it.

hope that helps!

   
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