"If this won't kill you, your electric bills will!!!" --- The Emperor to Luke Skywalker in a MAD magazine issue as the Sith discharges Force Lightning.
Finally after weeks of searching, I found an article about how to tweak your PC to save power and cut down on the electricity bills.
Here's another PC world article about Reducing Your PC's Power and Operating Costs.
Take note that, needless to say, I didn't write this article and accept no responsibility if anything adverse happens to your system if you apply what is discussed in it.