If your Mac is running slowly or displaying application memory warnings, you can clear RAM using several practical methods. The simplest approach is to close unnecessary applications, browser tabs, or resource heavy programs. Modern macOS is designed to manage memory efficiently by automatically reclaiming cached data when other applications require it.
For a more advanced solution, you can use the Terminal app. Open Terminal and type the command sudo purge, then press Return. You will be prompted to enter your administrator password to complete the process. This command removes unneeded cached data from your system memory without requiring a full restart.
If performance issues persist, consider restarting your computer or ensuring you have at least 20% of your startup disk space free. For more serious hardware concerns, you can use the built in Apple hardware diagnostic suite by holding the D key during startup. To clear basic system settings, you may also attempt a PRAM reset by holding Command, Option, P, and R during the startup process.
