Working memory, or RAM, is one of the few components you can customize when you buy most Macs. If you have too little, your Mac may be sluggish. To check how much RAM your Mac has.
First, click the “Apple”; menu in the upper left corner of the screen and select “About This Mac.”
Click the “Memory” tab in the window that appears to get a detailed look at the RAM on your Mac.
In a box in the upper left corner of the window, you will see a number that shows the current total amount of RAM installed. It will read something similar to “8 GB installed.”
Below you will find information about how many memory slots your Mac has and what size memory modules are installed in each one. This page also shows exactly what type or types of RAM modules your Mac is using. For example, this particular Mac uses “1600 MHz DDR3” memory modules.
If you feel you need more RAM, the best thing about the Memory tab in the “About This Mac” window is that there is a link to a web page where Apple explains exactly what you need to do to upgrade it. Just click on “Memory Upgrade Instructions” and you will automatically be taken to the website in a web browser.
When you’re done, just close the “About This Mac” window so you can learn more about your Mac, which is always good.