If it wasn’t the fake SMBIOS that was causing the problem, our next thought was to look at the AppleIntelCPUPowerManagement.kext hack. This kernel extension is disabled on all Hackintosh installations including so-called “vanilla installations” by either by removing the file itself, or adding another file to disable this feature. Once we re-enabled the kext, things returned to normal speeds. Deleting the file completely resulted in slower speeds once again.
AppleIntelCPUPowerManagement.kext installed but disabled via secondary kernel extension
With such a performance hit when running a hacked Macintosh, the Apple Tax takes on new meaning. Other notebooks may have similar performance penalties due to power management idiosyncrasies--the difference was never noticed because no one tried creating a “Hacked Mac on a Mac.”
When Wired Magazine tried running Mac OS X on their MSI Wind, they noted that OS X ran faster on the netbook than Windows XP did. Earlier, we mentioned that the MacBook was extremely responsive. If the MSI Wind was experiencing the same performance deficits that we saw when running “Hacked Mac on a Mac” when the AppleIntelCPUPowerManagement kernel extension is disabled, then an official Apple Netbook would be well worth the Apple Tax…