I am considering upgrading all the macs in my house with new Ram, does anyone know what ram configuration is in the 2011 MacBook Pro 15" It is 4GB but is it 1x4GB or 2x2GB(My Guess). Also does anyone know what the MacBook Pro 13" has? I would crack them open myself but can not find a screwdriver in my house that fits it. Appreciate anyones input.