A couple of recommendations- On the opening page there are some articles that explain the basics of voerclocking processors,such as "why the multiplier adjustments" don't work on Intel cpu's. Also there is a database of different cpu types that shows the typical performance of different cpu's, and the hardware that was required to make them happy.
If that doesn't answer your questions directly, it will give you an idea of the type of information to provide on these forums to be able to obtain help from the many knowledgeable folks.
Good luck
Tim