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My 4gb RAM turns to 3.5gb

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  • Memory
Last response: in Memory
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December 12, 2011 8:48:43 AM

I recently install my Biostar GT220 GDDR3.. After I install the newly buy Video Card, my 4gbRam turns to 3.5gb

So this is my question

1. Is this affected to my O.S. Win7 32bit Professional ?, I use 32bit because I read that 32bit can handle 4gb RAM

2. Or this is just the effect of GT220 GDDR3?

I want to ask first because I dont want to format my PC immediately to 64bit OS or what...

MY SPECS:
Operating System: Microsoft Windows 7 Professional
OS Service Pack: Service Pack 1
Processor: Athlon II x3 445
Mobo: ASROCK n68c-s UCC
Ram: 2x2gb 1333 Corsair Value Select
VGA: Nvidia GeForce GT220 1gb 128bit

This the VGA link: http://www.biostar.com.tw/app/en/vga/introduction.php?S...




More about : 4gb ram turns 5gb

December 12, 2011 8:52:18 AM

Windows 7 have reversed 0.5GB to make sure it always has enough, so you have 0.5GB for the OS and 3.4GB for your programs.
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December 12, 2011 9:02:22 AM

@fullforce

thanks for the reply...

So it means my RAM is still on 4gb RAM?...
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Related resources
Anonymous
a b } Memory
December 12, 2011 9:10:37 AM

You are using 32-bit OS.
Your system could not address more memory.
Install 64 bit Windows would solve this issue.
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a b } Memory
December 12, 2011 9:14:24 AM

Its the 32-bit operating system. It can only logically address 3.xGB of RAM.
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a b } Memory
December 12, 2011 11:39:57 AM

The 32-bit OS is reserving some of the 4GB address space for the RAM on the Video card.
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Anonymous
a b } Memory
December 12, 2011 2:19:04 PM

clarkjd said:
The 32-bit OS is reserving some of the 4GB address space for the RAM on the Video card.

Not necessarily.
The 4GB limit refers to total addressable memory space and not just the RAM installed.
http://www.tomshardware.com/forum/285279-30-maximum
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Best solution

a b } Memory
December 12, 2011 2:59:56 PM

32 bit Windows can't address more than 4GB memory. And this includes ALL memory, even CPU cache, HD cache, DVD Drive cache, VGA memory, etc.

You need to upgrade to 64 bits windows to proper use all the memory
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a b } Memory
December 13, 2011 5:46:45 AM

vitornob said:
32 bit Windows can't address more than 4GB memory. And this includes ALL memory, even CPU cache, HD cache, DVD Drive cache, VGA memory, etc.

You need to upgrade to 64 bits windows to proper use all the memory


Great explanation. Respect.
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December 13, 2011 9:09:07 PM

I think I dont have a choice, I will format my pc to 64bit.

To all who reply, thanks to your comments, suggestion and explanation...
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December 13, 2011 9:09:29 PM

Best answer selected by lodz05.
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December 21, 2011 12:41:04 PM

Hi,

As Vitornob correctly stated, Microsoft Windows 7 32-bit can address up to 4GB of memory; however, typically speaking, 32-bit operating systems address around 3GB of memory. Just for future reference regarding the limitations of different Windows editions, you may find this resource helpful.

Jessica
Windows Outreach Team – IT Pro
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