Computer Energy Consumption In Watts

Even at the maximum a large laptop drawing 90 watts for 12 hours would cost less than 11 cents per day at the ten cents per kwh rate.

Computer energy consumption in watts.

When i used joulemeter s manual approach to estimate the energy consumed by two windows 7 desktops and a windows 8 1 laptop the utility indicated that the desktops used about 75 watts an hour and. Solid state drive ssd power consumption. The electricity usage of a computer also heavily depends on the video card a high end video card can use a lot of power and having more than one sli or crossfire mode. Conventional hard drive power consumption.

Most pcs come with power saving features that lower your energy usage when the. It s a must tool for estimating the power consumption of a modern desktop pc. Just multiply your appliance s wattage by the number of hours you use it in a day. A computer whose label or power supply says 300 watts might only use about 70.

It can be used to select a proper power supply unit for your system. But as you ve probably gathered from the other replies the extent of which can be measured may be limited by hardware software or requ. 5 watts to 6 8 watts. The first step in calculating your energy consumption is to figure out how many watts each device uses per day.

Computer monitor 150 watts computer tower 120 watts television 19 36 65 133 watts television 53 61 170 watts how to calculate my energy consumption. Most laptop computers use about 15 60 watts far less than desktops. The energy e in kilowatt hours kwh per day is equal to the power p in watts w times number of usage hours per day t divided by 1000 watts per kilowatt. Ssd energy usage varies more widely than conventional hard drive power usage because ssds use far less energy when idle due to the lack of a power hungry spindle motor.

The computer power supply is not an accurate way to measure energy use because the power supply output is advertised as the max amount of watts a power supply can output. With most devices you can look at the label to see how much energy they use but that doesn t work so well with computers because the label gives the theoretical maximum not the typical amount used. What s more the listed computer wattages represent the maximum levels so the actual energy consumption of your laptop is likely to be lower than the number on the label.