How much power does a laptop typically use when running?
The power of each notebook is different, generally around 60W-70W, but it is not actually used. Laptop accessories are generally designed specifically for low energy consumption, and the power is generally between 1/2 and 1/3 of a desktop, or even lower, not to mention the power of a netbook.
The power of a notebook computer is generally about 20W, which is related to the screen size and height, and also to the CPU. For example, the second generation of Centrino uses less power than the first generation.
Laptops have different power levels during use, which depends on the operations you do on the laptop: whether you are surfing the Internet, using a CD-ROM drive to watch movies, using a mobile hard drive, and the display screen Brightness, and the computer also has an automatic power management system that adjusts your power at any time.
Calculation of notebook power: If the output voltage is 16 volts and the output current is 3.75 amps, then the notebook power is 16 About 90w.
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Use a notebook for testing. The power of other types of notebooks can also be roughly referenced:
Model: Shenzhou W220R
Configuration : Pentium dual-core T2130, 12-inch high-brightness widescreen, 2G DR2, 120G hard drive, 128M integrated display
Unplug the laptop battery for power testing and directly measure the voltage and current at the AC terminal.
Voltage during test: 224V
1. Current before booting into WINDOWS: 0.13A--------------------- --Power: 29.12W
2. When there is no operation after entering the system Current: 0.10A------------------Power: 22.40W
3. Current when playing HDTV high-definition movies (70% CPU usage): 0.13A ----------Power: 29.12W
4 , When running multiple large-scale software (CPU takes up more than 95%), current: 0.15A------Power: 33.60W
5. Close the screen in the above 4 cases to turn off the screen :0.11A---------Power:22.40W
Comprehensive analysis:
The power is unstable when turning on the machine and will fluctuate between medium and maximum -------------23~33W
After turning on the machine When entering the system and there is no operation----------------------------------23W
Running at full speed------------------------------------------ ------34W
Usually surfing the Internet and so on---------------------------------- ------27W
The power of turning on the screen minus the power of turning off the screen is the power consumption of the screen itself ---------- 9W
To sum up the above Description: The power of a laptop is about 23-33W.
The above is an introduction to how powerful a laptop computer is . I hope it will be helpful to you!