Also, look at the memory line to see how much RAM your computer already has.ĥ. For example, mine is: iMac (27-inch, late 2013).Ĥ. Look for either the year your computer came out or the model number. Identify your iMac model and max amount of RAMīefore you can install new RAM, you need to determine what kind of iMac you have. Instead, you have to take apart most of the iMac to add more. Unfortunately, if you have a 21.5-inch model made after 2011 or an iMac Pro, there isn't a way to easily access RAM. If you have a pre-2011 27-inch or a 21.5-inch iMac, there's an access panel in the bottom grille of the computer. Since late 2012, 27-inch models have a door behind the stand that gives you easy access so you can add more RAM. IMacs come in two sizes - 27-inch and 21.5-inch models.
