When the computer is on does it use alot of electricity?
depends on how many watts the power supply is the higher the watts the more power is used A typical desktop computer uses about 65 to 250 watts How much it costs to run your computer To calculate your costs use this formula: Watts x Hours Used x Cost per kilowatt-hour = Total Cost 1000 For example, let’s say you have a big high-end computer with a gaming-level graphics card and an old CRT monitor, and you leave them on 24/7. That’s about 330 watts x 24 hours x 365 days/yr = 2,890,800 watt-hours, or 2891 kilowatt-hours. If you’re paying $0.14 per kWh, you’re paying $405 a year to run your computer.