How much electricity do computers use?

[Badshah Mamun]

How much electricity do computers use?

•   A typical desktop computer uses about 65 to 250 watts.
•   Add another 20-40 watts for an LCD monitor, or about 80 watts if you have an old-school 17" CRT.
•   Most laptop computers use about 15-60 watts, far less than desktops.
•   As long as your computer goes into sleep/standby when you're not using it, your computer doesn't use squat for electricity, compared to the rest of your household. 

Source: http://michaelbluejay.com/electricity/computers.html