52 WAYS TO SPEED Up OS X

7. Turn off Universal Access (if not used) Navigate to System Preferences > Universal Access and turn off anything you're not using.
8. Turn off Bluetooth (if not used) Navigate to System Preferences > Bluetooth.
9. Turn off speech recognition (if not used) Navigate to System Preferences > Speech Recognition.
10. Turn off internet sharing (if not used) Navigate to System Preferences > Sharing > Internet
11. Check there is plenty of disk space on the boot drive. Your Mac uses some of your hard drive space as virtual memory when there is not enough actual memory available. Its good to always keep 10% of your hard drive free for such activity.
12. Remove Unwanted Language Packs OS X contains hundreds of languages that you most likely wont use. Monolingual is a free program that can root out these languages and remove them saving you some extra disk space.