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Can any one explain this

"My feiend is using a Windows xP O.S. & a 2x2gb=4gb RAM but on the DXDIAG it onlt shows 3gb"

Also

"I have Windows Vista 64 bit & 2 gb RAM, So is it OK if I get another 2 gb RAM, I mean It wouldnt show only 3 gb insted of 4 gb"

WARICK
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  • Multiple duplicates - http://superuser.com/questions/15900/4gb-memory-seen-as-3gb-in-bios

    http://superuser.com/questions/30425/i-have-4gb-of-ram-installed-but-only-2gb-are-useble

    http://superuser.com/questions/17827/using-3-gb-ram-in-vista-windows732-bit

    http://superuser.com/questions/27086/windows-xp-and-ram-3-5gb

    http://superuser.com/questions/27006/how-to-check-ram-size-without-looking-at-motherboard

     – ChrisF Oct 05 '09 at 09:52

1 Answers1

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OK... It could be a few things, but the most common thing is...

Your friend either has the 32 bit edition of Windows which can only see ~3GBs of memory, or he has the 64bit edition, but 1GB is reserved for graphics.

If you have the 64bit edition, you should not have a problem seeing the full 4GBs unless again, you have memory reserved for your graphics card.

William Hilsum
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