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Possible Duplicate:
4 GB of Ram installed but only 2.97GB usable. What gives?

Installed RAM : 4 GB but 2.96GB Usable......why?

I installed 2 x 2 GB DDR2 800 MHz.

My Windows is Windows 7 Ultimate 32-bit.

Is my ram Faulty?

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marked as duplicate by Sathya, Nifle, quack quixote May 17 '10 at 8:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 4 down vote accepted

It is because you are running a 32 bit OS. You would have known that if you had used the search box.

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but i thought windows 7 32 bit will support 4 gb ram – metal gear solid May 17 '10 at 5:19
I'm not sure why you thought that... It is posted everywhere that it won't. You need the 64bit version. – Mitch Dempsey May 17 '10 at 5:20
do you mean then 1) 2gb module and 1) 1 gb module of RAM was enough on Windows 7 32 Bit/ Windows XP 32 bit. no use of extra 1 GB available RAM – metal gear solid May 17 '10 at 5:22
Windows 7 32 bit: Supports <=3GB. Windows 7 64bit: Supports more than 3GB – Mitch Dempsey May 17 '10 at 5:24
Turning memory remapping off in your BIOS, if it has such an option, may get you an extra .2GB to .5GB. But you'll never get more than 3.5GB on 32-bit Windows 7. – David Schwartz Nov 22 '11 at 4:18

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