Microsoft plugs new power savings in Windows 10

Aims to extend laptop battery life by 11% with per-app processor throttling

IDG

IDG

Microsoft yesterday touted operating system-wide power savings in a recent preview of Windows 10, claiming that the technology will reduce notebook battery consumption by 11% on laptops equipped with the newest processors.

The technology, temporarily tagged as "Power Throttling," was enabled on all copies of Windows 10 Insider build 16176, which Microsoft released Friday.

Insider is the beta program Microsoft runs for both enthusiasts and businesses. The latter rely on Insider to learn how the OS will change for the next feature upgrade, as well as for testing the upgrade prior to deploying the final code when it is shipped several months later.

"With 'Power Throttling,' when background work is running, Windows places the CPU in its most energy efficient operating modes -- work gets done, but the minimal possible battery is spent on that work," Bill Karagounis, director of program management for Insider, said in a post to a company blog.

The CPU throttling is triggered on an app-specific basis by a detection system Microsoft integrated with the OS, said Karagounis. Like other such technologies, Microsoft's is meant to recognize foreground tasks -- such as active apps -- as well as persistent applications, like music streaming applications, then give them full access to the processor.

Other apps, or even individual processes within an app, that are classified as "background," are restricted in how they impact the CPU's power usage. For instance, they may not be allowed to kick the processor into its higher-frequency, higher-power, higher-consumption mode.

Power Throttling works only on Intel processors with that firm's Speed Shift, a feature of sixth-generation and later CPUs, including "Skylake" and the newer "Kaby Lake."

Recognizing that most personal computers are laptops and that battery longevity is a major factor in productivity, Microsoft has aggressively promoted Windows 10's power savings, notably in the boosterism behind Edge, the OS's default browser.

The Redmond, Wash. company isn't working in a vacuum: Other operating systems also try to eke out more battery life by scaling back CPU use.

Apple's iOS, for instance, switches to a low-power mode when an iPhone or iPad battery reaches about 20% capacity. Among other things, the iOS mode halts background app refreshing and stops automatic email fetching.

Microsoft first added Power Throttling to Windows 10 in January, saying that it had turned it on for a subset of Insider-equipped devices as an experiment and promising to provide an update in mid-February.

That update never appeared, hinting that Microsoft pulled it from inclusion in the then-upcoming Creators Update, the feature upgrade released April 11.

The first opportunity most users will have to apply Power Throttling will be with 2017's second feature upgrade. Microsoft has not revealed a release timetable, but most experts expect it to appear this fall.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags Daily Briefing

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Computerworld (US)
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?