Ok, I have seen many people suggesting setCPU to people who are wanting to overclock their phones. They also say they have to buy it off the market. Now, I am not saying that donating to the developer is a bad thing, because I myself have done it, but you can get setCPU for free from the developer over at forum.xda-developers.com.
I just don't want people thinking they HAVE to buy something to get control over something as sensitive as this.
Here is the link to the official thread:
SetCPU for Root Users [1.5.1a] 04/02/2010
Or you can donate to the developer by buying it here: