DO NOT install this and go straight at setting the highest speed shown. That would almost certainly do dreadful things and make your mother wonder where she went wrong in raising you.
I've personally found 902MHz to be a pretty good top setting, but you may have more or less luck than me. Feel free to fiddle with speeds until you get it right for your hardware, but do it gently.
In case of an upside down front camera (likely if you use a ROM based on P771FV1.0.0B05 such as F'N'C3,) use this instead:
* OK, no sparkle. It does add overclocking though.
Edited by Fuzzra, 08 March 2012 - 12:33 PM.