How many times have your parents asked you to turn the tap off in order to avoid wasting water? How many times have you opted to purchase an energy-saving lamp in order to reduce your electricity bill? The power consumption of home PC ranges from 400 to 650 Wt1 - enough to illuminate 6-10 lamps, but have you ever considered managing your PC energy consumption? Nowadays there is a solution for that concern and it is known as PC power management. It “refers to the mechanism for controlling the power use of personal computer hardware. This is typically through the use of software that puts the hardware into the lowest power demand state available.”[1] It may vary from “plug-and-play” software for home users up to complex software solutions for enterprises. The Cleantech market intelligence firm forecasts that PC power management software alone could be saving almost 47 mt CO2 of emissions by 2015, equivalent to taking nearly 8 million cars off the road.[2]