When overclocking my computer I just looked around the internet to see what other people where running for their front side bus and bus/core ratio and the results that they got. There is a website called overclockers.com I think where people post their overclock setting for their mobo and cpu combo. Overclocking is somewhat complicated because you have to consider many things such as you memory speed when doing an overclock. One of my biggest suggestions would be to make sure that your computer is properly cooled. Also I like to go into BIOS and turn on the temperature based shutoff that shuts down the computer if the CPU gets too hot before making any speed increases.