Available RAM 3gb less than what it should be

Hi,
I have 16GB of ram installed on my computer and when I right click on 'my computer' and click on properties it says 16.0 GB (15.9 GB usable), which is fine.

However when I go onto system information it says:
Installed physical memory 16.0 GB
Total physical memory 15.9 GB
Available physical memory 13.2 GB


What is this available physical memory and why is it 3GB less than my total memory? Could it be that it's just because I have a few programs open on my operating system?

Thanks,
Dan.
Reply to XdbodzX
5 answers Last reply
More about ram 3gb
  1. Yes Available physical memory means how much ram is not used
    Reply to nitinvaid20
  2. what kind of graphics card do you have? if it is integrated or using the one on the CPU then this could explain it as well
    Reply to captaincharisma
  3. captaincharisma said:
    what kind of graphics card do you have? if it is integrated or using the one on the CPU then this could explain it as well


    I have a gtx 760 with 2GB VRAM - would this affect it?
    Reply to XdbodzX
  4. nitinvaid20 said:
    Yes Available physical memory means how much ram is not used


    Okay thanks :)
    Reply to XdbodzX
  5. the reason why is that all hardware need some access to main memory. The 3gb reserved is normal for Windows, the additional hardware that need memory. Nothing to worry about.
    Reply to keith12
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