why is my ram only using 3.56 gb of (8gb ram)

bubblegum5

Honorable
Jul 20, 2013
14
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why is my ram only using 3.56 gb of (8gb ram) this is my pc specs

ASrock G41C - GS board
Pentium 4 2.66ghz lga 775
ddr3 8gb of ram ( 3.56 gb usable )
Nvidia Geforce GT 630 1gb ddr3 ( GPU )
80gb HDD seagate
 

bubblegum5

Honorable
Jul 20, 2013
14
0
10,520


I have win 7 ultimate 32 bit