The main enemy of any gadget is applications, the energy efficiency of which is far from perfect. The browser is recognized as one of such wasters, but Microsoft managed to solve problems with "gluttony" of Blink engine, which is used in all Chromium browsers.
Representatives of Microsoft called the main problem of Chromium. It is forced caching of multimedia. In this regard, the laptop disk is in constant operation. Microsoft approached Google and told them about the defect.
In response, Google immediately released a new build of Chrome Canary, which forced caching is disabled. The same decision was made in Microsoft, modifying the test version of Edge. In the Assembly Edge 78.0.256.0 in the browser settings, you can disable the item "to Cache streaming media to disk".
The developers note that disabling this item will significantly reduce the power consumption of the browser and, as a result, increase the autonomy of the laptop. The only drawback of this method — problems with downloading media when the Internet connection is low speed.
In parallel, Microsoft is considering writing the cache not to SSD or HDD-drive, but directly to RAM. But in this case, the user will face the need to increase RAM, which is also understood in Microsoft.