I have 8gb of ram installed and it says only 3.49gb is useable
i built this gaming pc yesterday and istalled the windows and everything , but when i took a look at the computer properties i noticed that the RAM is underused , i have 8gb ram (2x4gb Corsair XMS3 ddr3) it only say that 3.49gb of RAM is useable as in the pic bellow , so why did that happen ? and how to fix it ? please reply me as soon as possible .
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More aboutinstalled 49gb useable
You are running a 32bit OS according to the screenshot. You need a 64bit OS to take advantage of any amount of memory above 4GB
As he said. There's almost no reason to use 32bit anyway. Start over and install the 64bit version.