Random access memory (RAM) is a general indication of performance that is measured either in megabytes (MB) or gigabytes (GB): the larger the number, the faster some programs will run.
To find out how much RAM your computer has
Open System by clicking the Start button, right-clicking Computer, and then clicking Properties.
In the System section, next to Installed memory (RAM), you can see the amount of RAM your computer has.
Note
In some cases, Windows reports both the amount of memory that's installed on your computer and the amount of memory that's usable. If you're using a 32-bit version of Windows, the amount of usable memory might be less than the total amount of memory installed.