Microsoft has improved the Sleeping Tabs feature in Microsoft Edge. Now, the browser can more "sleeping tabs" to maximize resource savings on your device. Improvements are available starting in Microsoft Edge 100 and above.
First of all, Microsoft has changed how the tabs go into sleep. Previously, tabs would not go to sleep if the background and active pages were using the same browser instance. Now, they don't depends on the background activity.
Microsoft claims that this change allows you to hibernate 8% more tabs, and each "sleeping tab" saves up to 99% of processor resources and up to 85% of RAM. This will allow the browser to release more resources that can be needed for other apps.
To learn how much resources the Sleeping Tabs feature has saved, you can use the new Performance pop-up in the toolbar or in the "..." menu. There, you will find how much memory Sleeping Tabs saved for you.
Microsoft first introduced Sleeping Tabs back in 2020. It puts inactive tabs to a special unloaded state, so they don't consume RAM and CPU. Once you switch back to such an unloaded tab, the browser instantly restores it in memory and loads its content.
The user can customize the idle timeout after which Edge puts a tab into sleep mode. Also, there is a list of exceptions to specify sites that should never be unloaded.
Sleeping Tabs are great for devices with battery power, as by reducing the resource consumption they extend the battery life. Users of aged and lower powered devices will also benefit from this feature as it saves invaluable CPU and RAM resources. Source: Microsoft.
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