25 Ways to Speed Up Your Mac
Posted 04/28/2009 at 8:51pm
| by Michael Simon
Break Down the Language Barrier
OS X’s “Welcome” movie greets users in 15 languages, so you can only imagine how many useless fonts and localization files are littering your hard drive. Free space equals free speed, so get your hands on a copy of Monolingual and reclaim those lost gigabytes.
Me and My Shadow
For older Macs, OS X’s slick effects can be a real drain on the CPU. Weaker processors will benefit from, say, removing the drop shadows in iPhoto, but Apple offers no way to lessen the burden of Leopard’s deep shadows. But if your Mac is really struggling (and downgrading to Tiger isn’t an option), Unsanity’s Shadowkiller will wipe out every silhouette. (Editor’s note: It’s not pretty. Nor is it officially supported for Leopard, so the only way to get the shadows back is to shut down and log back in again.)
2D’s Company; 3D’s a Crowd
Another bit of eye candy that might be holding back older Macs is the new 3D dock, but with a little Terminal tinkering, you can shatter its glassy look. Simply type:
defaults write com.apple.dock no-glass -boolean YES
followed by
killall Dock
to return to the less graphic-intensive interface. (Editor’s note: To return to 3D, follow the same steps but replace “YES” with “NO.”)
Start from Scratch
When all else fails, a clean install of OS X is a sure-fire way to get your Mac back on track, albeit with a fair amount of elbow grease. “Erase and Install” after a back-up is the best option for clearing out all the cobwebs, corrupt preference files and stuck processes, but it’ll require more than a few restarts and trips to Software Update to get things up to speed, not to mention transferring files and digging up all those serial numbers and passwords. For lighter lifting, choose “Archive and Install,” but be wary of filling your drive with too many of those “Previous System” files and folders.
Masters of the Universal
When Apple announced the switch from PowerPC to Intel processors, it did an admirable job of making sure all those suddenly obsolete apps ran as smoothly as possible. However, Rosetta apps are RAM hogs that goggle valuable system resources, especially processor-heavy ones like Photoshop or Dreamweaver. If you can’t afford an upgrade to a Universal version, skip to the next tip.
RAM-ming Speed!

Whether you own an iMac or a MacBook, the most sure-fire way to speed things up is to max out your RAM sticks. More than likely you can double--or in some cases, quadruple--your system’s memory for around $100.
Drive in the Fast Lane
While not as proven of a speed booster--or as easy to install--replacing your Mac’s hard drive may very well bring about an overall snappier experience. For one, you’ll be adding more space; for another, you’ll likely increase the RPMs, which will help OS X retrieve data at a faster clip. And if you’re willing to spend a few extra bucks on a bigger buffer, and you’ll really see a difference.
Open Some Windows
If you really want to Mac to feel faster, spend an hour working on a PC. Then go and give your Mac a great big hug.
Got a tip to make your Mac scream? Drop in the comments below!