typical wattage for computers
Due to using faster, higher-power parts, desktop computers use significantly more power than laptops, which generally use fewer than 100 watts. Desktop computers can vary significantly, but a typical computer under average load uses around 65 to 250 watts.For a PC with a high-end video card, add another 150 to 300 watts while rendering graphics.esktop computers can vary significantly, but a typical computer under average load uses around 65 to 250 watts. For a PC with a high-end video card, add another 150 to 300 watts while rendering graphics.