AfterDawn: Tech news

Windows 8 adds improved power management to optimize tablet battery life

Written by Rich Fiscus @ 09 Nov 2011 1:13 User comments (2)

Windows 8 adds improved power management to optimize tablet battery life

In the latest update to the Building Windows 8 blog, Pat Stemen, who heads the Windows Kernel team, talks about improvements in the next version of Windows designed to lower power consumption.
With its focus on becoming viable for tablets, power consumption is more important for Windows 8 than any previous version of the Microsoft's flagship OS. No matter how good the interface is, a tablet OS that drains batteries too quickly has no value.

Microsoft's focus with Windows 8, says Stemen, is primarily on reducing power consumption when the computer is in an idle state. That is, when it isn't doing anything.

By doing that, he says, you also reduce the power consumption the rest of the time.

In many ways this is actually about the hardware. Modern mobile processors, such as the ARM chips used in most smartphones and tablets, are already optimized to use minimal power as often as possible.

The role of Windows, according to Stemen, is primarily to get out of the way and, "Let the hardware shine." To accomplish this, the Metro Style UI takes a different approach to background processes to allow a computer, such as a tablet, to spend more time idle.



The result is that the computer spends more time in a continuous idle state. This is important, says Stemen, because it takes a certain amount of time before the hardware decides to change states from active to idle.



Stemen also stresses the role hardware beyond the processor plays in power management. Windows 8 has a new runtime device power management framework designed to be used by device drivers. Device manufacturers will be able to use special Power Engine Plug-in to ensure Windows takes full advantage of whatever power management features are available.

Previous Next  

2 user comments

110.11.2011 00:50

I just don't see Windows 8 mainstreaming for regular PC users. The OS looks ideal and to be a great idea for tablets and/or laptops but no way in Hell am I converting to this for my desktop.

212.11.2011 00:00

Microsoft just keeps getting slower and slower responding to the rest of the industry.
R.I.P.

Comments have been disabled for this article.

Latest news

Guide: How to Kick Unwanted Guests from Your Netflix Account Guide: How to Kick Unwanted Guests from Your Netflix Account (26 Jan 2023 2:14)
Sharing a Netflix account with a person in a different location is possible and indeed very common, although the company doesn't necessarily enjoy this behavior from their customers. However, ....
1 user comment
Guide: Turn an Old Computer Into a Chromebook Easily and for Free Guide: Turn an Old Computer Into a Chromebook Easily and for Free (07 Jan 2023 2:11)
Do you know someone whose computer is way beyond its best-before date, and they, unfortunately, do know have the skills or the expertise to do much about it? Or do you own a pile of old laptop ....
3 user comments
How to Choose a Robot Vacuum? How to Choose a Robot Vacuum? (07 Jan 2023 9:12)
Robot vacuums are meant to make day-to-day life easier in several ways. When they are used efficiently, they can keep the house clean continuously - at least when it comes to floors. In addition, ....
4 user comments
Tech year 2022 wrapped up: The rise of the AI, EU to become the much-needed counterweight to tech giants, ... Tech year 2022 wrapped up: The rise of the AI, EU to become the much-needed counterweight to tech giants, ... (01 Jan 2023 2:11)
AfterDawn's wrap-up for the tech year 2022. The rise of the artificial intelligence was probably the most significant change that occurred during the year 2022, but there were many other interesting developments, too.
2 user comments
OPPO to follow Samsung, OnePlus: Promises 4 Android updates, 5 years of patches for upcoming flagships OPPO to follow Samsung, OnePlus: Promises 4 Android updates, 5 years of patches for upcoming flagships (21 Dec 2022 3:45)
OPPO has updated its official Android update policy. Phone manufacturer now promises four major Android operating system updates for its new flagship phones.
4 user comments

News archive