Upgrading notebook memory is an absolute must, at least in my opinion, due to all the benefits it provides. To understand how installing laptop memory will actually help you, you need to understand how RAM works. RAM temporarily holds information that was taken from the hard drive & keeps it available and easily accessible by the computer’s central processing unit (CPU), also known as the processor. RAM temporarily holds information that was taken from the hard drive & keeps it available and easily accessible by the computer’s central processing unit (CPU), also known as the processor.