What you need

To use this kext, you need:

• Mac OS X (tested on 10.5, should work on 10.4)
• Any kernel including vanilla, sleep or speedstep
• A SpeedStep-capable Intel CPU (no AMD, no Celeron M)

How to install

1. Download the kext from the Downloads page. Unzip it.
2. Use KextHelper or OSx86-Tools to install it

Alternatively, you can use the command-line to install it.

1. Open Terminal.app (Applications > Utility)
2. Navigate to the folder where you unzipped the kext cd ~/Downloads/IntelEnhancedSpeedStep_1.3.2/
3. Type the following:

sudo cp -R IntelEnhancedSpeedStep.kext /System/Library/Extensions
sudo chown -R root:wheel /System/Library/Extensions/IntelEnhancedSpeedStep.kext
sudo chmod -R 755 /System/Library/Extensions/IntelEnhancedSpeedStep.kext
sudo touch /System/Library/Extensions

4. Then, reboot.

How to load/unload without installing

You can use kextload or kextunload to load or unload the kext temporarily. Instead of putting it in /System/Library/Extensions, just keep it anywhere else (/tmp is a good place). Change the permissions/owner using the above commands. Then kextload /tmp/IntelEnhancedSpeedStep.kext.

Now what?

Now refer to the TestingTheKext page to begin using/testing it!