The average Pentium PC with a CRT might use about 200 watts of power and cost about $15 dollars to operate each month. Printers, CD burners and other periphs can add up to even more significant costs.
Power supplies themselves are a major source of power loss. A typical PS is only 70% efficient (the other 30% is heat,etc.)
Energy Star program encourages mfgs to create efficient elecs, and consumers to buy it.
See the "DISPLAY PROPERTIES" Screen Saver property sheet for options for hibernation mode, etc.
