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Problem of usable RAM

Last response: in Components
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February 16, 2012 8:18:58 AM

I have core i3 2100 3.1Ghz CPU,MSI Nvidia Geforce GTX 560ti Graphic card,6GB installed RAM and window 7 ultimate 32-bit operating system.

I have problem,my system shows only 2.99GB usable RAM instead of 6GB.

Please give me solution to resolve this problem and use whole installed RAM.

More about : problem usable ram

a c 109 U Graphics card
February 16, 2012 8:22:04 AM

You need 64bit in order to use more than 4gb of ram.
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a b U Graphics card
February 16, 2012 11:09:55 AM

32-bit OS's have a hard architectual limit of 4GB. The OS is simply incapable of addressing more then that, as it can't count higher then 2^32, or 4GB.

However, within that 4GB range, upwards of 1GB is reserved for addressing hardware [the PCI/PCI-E bus is by far the biggest offender]. Typically, you are left with somewhere between 2.75 and 3.5 GB of usable RAM on a 32-bit system installed with 4GB+ physical RAM as a result.

The only way to have all that RAM usable by the system is to move to a 64-bit OS.
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a b U Graphics card
February 16, 2012 11:10:51 AM

32-bit is capable of only approx. 4 billion addresses (4GB)

All of the hardware in your pc needs addresses and the memory gets what's left over, which very rarely reaches as high as 3.5GB these days.

The answer is to install a 64-bit version of windows as this can address lots more RAM.
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