Force really 1 GB of ram?

Why is it that when I view my running apps the combined used and available ram do not equal 1 GB of ram that Force is supposed to have?
Is it because there is some ram that is dedicated and it doesn't show up?


I'm no Senior
It may be the ram that's used by the system is not counted since on most phone its not. On my S3 with 2GB of RAM it only shows 1.59 in total.