Browser efficiency comparison - Fullscreen Video

Windows 10 May 2019 Update

Methodology summary

The Microsoft Edge team measured the time it took identical Surface Laptop 2 devices to run fully through their batteries while streaming HTML5 video in fullscreen.

The test was done with Windows build 18362 and connected to the Internet through Wifi, and multiple samples were taken.


Microsoft Edge lasts up to 41% longer than Chrome.

Microsoft Edge lasts up to 92% longer than Firefox.

Methodology details

Computer setup

The test was performed on separate Surface Laptop 2 devices running the Windows 10 May 2019 Update. A sample was taken for each browser on each laptop. These computers were configured to the following settings, to increase consistency between measures and reduce tasks that may start during the measurement and interfere with the results, while still representing a realistic user setup:


Processor Intel Core i5-8250U @ 1.6GHz
Graphics Integrated Intel UHD Graphics 620

Running the test

The laptops were allowed to play video until all of them had lost power. After the power had run down and the laptops had shut off, power was restored. Run-time and power consumption data was then collected by running "powercfg /spr" and opening the generated report.

Result Details


Browser Duration Edge Advantage
Edge 18.18362 18:54:46
Chrome 74 13:22:16 Edge lasts 41% longer
Firefox 66 9:49:09 Edge lasts 92% longer