As for setcpu that you also posted, I believe you would only be able to underclock the kernel. Setcpu is used on devices that can overclock/underclock the kernel. Kernels are what the processor uses to run the device aka the brain and setcpu with root permission allows you to control how fast/slow you want it to go,thus mainly used for battery saving or speed up for performance. This also requires an unlocked bootloader to have this feature the bootloader is what allows modification to be allowed to swap out kernels to have optimum performance with out sacrificing battery. Which also helps devs in the making of roms easier hence why there are more dev support for the nexus/rezound as those devices are unlocked and able to flash roms and kernels. Razr and it being locked down regardless if it being able to root we are still very limited as to what we can modify. If you wanted to do flashing and romming the Razr will be slow to get started and you probably should've went with a device that was not locked. Sorry for the long post but hope this explains it a little better. Hopefully when the Razr gets ICS ota it will be unlocked (don't quote me on that) and we'll see some love for this awesome device and truly see the full potential it has.
Sent from my Updated and Re-Rooted Og Droid Razr sliced thin!
Good explanation! I only have basically one correction to make. You can underclock with a locked bootloader, you just cannot undervolt or overclock using kernels or use kernels at all for that matter. You will need to get an app that will allow you to overclock. (Not sure what is out there if any though.)
But basically, a stock kernel will never be as good as a custom one from a dev! :biggrin:!
Sent from the best phone on Verizon!