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Microsoft Edge efficiency mode reduces CPU and RAM usage to save battery life

Microsoft Edge Update Dev New
Microsoft Edge Update Dev New (Image credit: Daniel Rubino / Windows Central)

Updated November 19, 2021 at 8:55 AM: This post has been updated with the date efficiency mode started rolling out to Edge.

What you need to know

  • Microsoft introduced an efficiency mode in Microsoft Edge to reduce battery consumption.
  • Efficiency mode reduces CPU and RAM usage to extend the battery life of PCs.
  • Microsoft announced efficiency mode alongside several new Edge features that focus on saving time and money.

Microsoft announced several new features for its Edge browser this week. Most of those tools focus on saving time and money while shopping, such as the new price notification feature. The company also introduced efficiency mode for Microsoft Edge to reduce battery consumption.

Efficiency mode kicks in when a PC's battery is low. The feature reduces CPU and RAM usage to lower how much power it draws from a device.

Here's Microsoft's description of the feature from the blog post introducing it:

When your device's battery is low, Microsoft Edge will set itself to efficiency mode and significantly reduce system resource usage like CPU and RAM, extending battery life and helping you get more done while on the go.

If you don't like Edge switching to efficiency mode, you'll be able to toggle the option off through the browser's settings.

The feature initially rolled out with Edge version 95 in October but was highlighted by Microsoft's recent blog post.

While you're browsing the web with Edge, make sure to check out our guide on how to use the browser to help you save time and money on Black Friday.

Sean Endicott
Sean Endicott

Sean Endicott is the news writer for Windows Central. If it runs Windows, is made by Microsoft, or has anything to do with either, he's on it. Sean's been with Windows Central since 2017 and is also our resident app expert. If you have a news tip or an app to review, hit him up at

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  • Sounds good. Is this going to kick in when I turn on battery saver? That would be ideal. I don't want a separate control really.