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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?
metal gear solid
Posted 2010-05-17T04:32:21.103
Reputation: 7 796
4
It is because you are running a 32 bit OS. You would have known that if you had used the search box.
Mitch Dempsey
Posted 2010-05-17T04:32:21.103
Reputation: 1 116
but i thought windows 7 32 bit will support 4 gb ram – metal gear solid – 2010-05-17T05:19:50.803
3I'm not sure why you thought that... It is posted everywhere that it won't. You need the 64bit version. – Mitch Dempsey – 2010-05-17T05:20:54.780
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 – 2010-05-17T05:22:06.493
Windows 7 32 bit: Supports <=3GB. Windows 7 64bit: Supports more than 3GB – Mitch Dempsey – 2010-05-17T05:24:03.493
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 – 2011-11-22T04:18:44.527
possible duplicate: http://superuser.com/questions/67444/is-there-way-to-enable-4gb-ram-in-32-bit-windows-os
– Michael Todd – 2010-05-17T04:37:40.8103
Look at http://superuser.com/questions/50138 http://superuser.com/questions/27086/windows-xp-and-ram-3-5gb http://superuser.com/questions/7964/where-did-the-other-8-gb-of-ram-go http://superuser.com/questions/17827/using-3-gb-ram-in-vista-windows732-bit http://superuser.com/questions/54056/why-is-usable-ram-less-than-total-ram http://superuser.com/questions/27006/how-to-check-ram-size-without-looking-at-motherboard
@OP: Please search before posting.Or atleast look at related questions when you enter the Q