Mac OS X Mountain Lion: Temperature Problems (Running Hot)

I noticed that my Mac Book Late 2008 ran hot with Mountain Lion. These temperature problems where not caused by a high CPU load. The Node was doing nothing. It really looked like there was a SpeedStep problem.

Finally I was able to fix the problem by patching the AppleIntelCPUPowerManagement.kext with SpeedStepper.

To do this Download it from

SpeedStepper v1.3 for Mountain Lion 10.8.3

And run it with:

sudo ~/Downloads/speedstepper_ml_1083 /System/Library/Extensions/AppleIntelCPUPowerManagement.kext/Contents/MacOS/AppleIntelCPUPowerManagement

Now my MacBook cooled down and the CPU runs now at 48°C.

If this helped you, it is possible to Donate using BitCoin: 12wwaAo85poj4oLgo3zL5r3cDD8J9AC3Ap