Desktop Optiplex Gx620 (Added Ram) Sees 3gb, only 2 usable?

buscemis19

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Nov 12, 2017
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My Computer is OPTIPLEX GX620. I decided to buy 2GB ram and add it to computer.
I was hoping to be at 4gb, but didn't realize the 4 sticks already in my computer were .5gb each.

Long story short. My computer has 3GB ram. 1gb, 1gb + .5gb + .5gb.

However, it says 3gb installed. (2 usable).

It doesn't make any sense to me why it would recognize the 3gb, but still only use 2.

I have windows 7, 64bit. not sure if that helps.