is feeling sluggish, a memory upgrade is one of the most effective and affordable ways to breathe new life into it. This guide covers everything from finding the right parts to the final installation. 1. Determining Your Needs

(both 21.5-inch and 27-inch models) has . While Apple officially stated a maximum of 16GB, independent testing and user experiences have confirmed these machines can actually handle up to 32GB of RAM (4 x 8GB modules). How to Install RAM in a new iMac (2011)