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Power Throttling Back in Windows 10 with Redstone 3 Build 16176

Windows 10 Build 16176 Task Manager: Power throttled processes
Windows 10 Build 16176 Task Manager: Power throttled processes

Back in January, Microsoft in build 15002 of Windows 10 introduced a new experiment dubbed ‘Power Throttling,’ that during some of the most strenous use cases helped savings of up to 11% in CPU power consumption.

Since then, the comany made improvements to this capability based on feedbacks from Windows Insider, now, in the latest Windows 10 Insider Preview build build 16176, Microsoft is introducing “Power Throttling,” that places the CPU in most energy efficient operating modes to get the background done with the minimal possible battery spent on that work.

“Most people running Windows like having multiple apps running at the same time – and often, what’s running in the background can drain your battery. We leveraged modern silicon capabilities to run background work in a power-efficient manner, thereby enhancing battery life significantly while still giving users access to powerful multitasking capabilities of Windows,” writes Bill Karagounis.

Power Throttling, is currently available to only Intel’s 6th-gen and beyond Core processors with Speed Shift technology. However, more processors support will be made available over the next few months.

Although, it works well with apps out of the box, developers with new API will be able to offer additional power savings by having more fine-grained control over Power Throttling.

Here is how power throttling work?

To give great performance to the apps you’re using, while at the same time power throttling background work, we built a sophisticated detection system into Windows. The OS identifies work that is important to you (apps in the foreground, apps playing music, as well as other categories of important work we infer from the demands of running apps and the apps the user interacts with).

If you happen to notice an app is negatively impacted by Power Throttling, Microsoft advises following:

  1. Run Feedback Hub and file feedback under the Power and Battery -> Throttled Applications category
  2. Control power throttling system-wide, using Power Slider. Windows works hardest to keep the processor in its efficient ranges when you’ve selected “Battery Saver” or “Recommended”, and turns off completely when you’ve selected “Best Performance”.
  3. Power Slider in Windows 10 build 16176
    Power Slider
  4. Opt individual apps out from Power Throttling:
    • Go to Battery Settings (Settings > System > Battery).
    • Click on “Battery Usage by App”.
    • Select your app.
    • Toggle “Managed by Windows” to “Off”.
    • Uncheck the “Reduce work app does when in background” checkbox.
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