Short guide from netkas: update guide
Start as super user (sudo...)
while sleep update 1 ; do rm -rf /System/Library/Extensions/AppleIntelCPUPowerManagement.kext ; done
Install and reboot
If you have problem mounting .dmg then you have to switch your seatbelt.kext to one matching your kernel version. There are planty of places where you can find those kexts for 9.5 and 9.6 kernels.
The system seems to be a lot snappier! Safari is of the charts in performance (still memory hungry but the performance is amazing...) Definitely recommended to all! In case you experience some problems with Radeon 4850 or 4830 try netkas workaround.