Moreover, when a screensaver is activated, a certain amount of processing power (CPU) and memory (RAM) is used to project images onto your screen. There is no substitute for this: turning off your display, whether manually or automatically after a specified period of time, saves power and extends the lifetime of the device. If your main concern is either with the longevity of your display or the preservation of energy, the single best way to 'save your screen' is to power it off.
Weighing the pros and cons Disadvantages of screensavers
