OS X Mountain Lion: If your Mac runs slowly
If you find your Mac is running slowly, there are a number of potential causes that you can check.
- An app you’re using may require more memory than your computer has. To see how much memory your computer has, choose Apple menu > About This Mac. See the documentation that came with the app to find out what it requires. To find out how to increase your computer’s memory, see the documentation that came with it.
Find the manual for your Mac
- Quit any application that isn’t compatible with your computer. For example, an application may require a different processor or graphics card. See the documentation that came with the application to find out what it requires.
To see what processor your computer has, choose Apple menu > About This Mac.
To see what graphics card your computer has, choose Apple menu > About This Mac, click More Info, and then click Displays.
- Your computer’s startup disk may not have enough free disk space. To make disk space available, you can move files to another disk and then delete files you no longer need on the startup disk.
- Quit any apps you’re not using.
- If none of these suggestions work, you may need to repair your computer’s disk in Disk Utility.