Windows 8 operating system power management mechanism improvement

Today's Windows8 official blog latest news shows that Windows 8 core team project manager Pat Stemen to explain the power working mechanism of Win8. The following are some of the content:

Battery life and functional consumption are still the top issues in the computer industry, we will want to show you how to manage power and how to deal with energy consumption in Windows 8, we are considering Power management is critical to any chip and PC.

When designing the Windows 8 power management mechanism, we followed the following three objectives:

1. Optimize hardware performance: whether it is a SoC-based Windows tablet or a SLI gaming computer. The goal of building power management for Windows 8 is to maximize the performance of the hardware.

2. Continue to provide extended battery life: In Windows 7, we have significantly reduced power consumption and improved battery efficiency, especially for laptops. In Windows 8, we plan to take advantage of other Windows while maintaining our first advantage.

3, enable smart phone power mode: The coolest thing on the SoC platform is to quickly enter the idle state of low power consumption. We'll take advantage of the ultra-low idle power consumption to enable Windows 8 to have sustainable links and instant features on smartphone power models.
Standby Power for Windows 8 Development Versions

In Windows 8, we made three key innovations.

1, Metro style program mode

In the traditional software design, opening a software will cause a certain consumption of CPU, GPU, network, hard disk and memory, but in Windows 8 In the middle, when the Metro program hangs, it does not consume resources and power.

2, Idle Time Improvements

Most PC platform processor chipsets allow them to turn off power consumption when not in use, thus extending power life, but they will There is a minimum dispatch duration, which we have also improved in Windows 8. After testing, we extended the minimum dispatch duration from 15.6ms to 100ms in Windows 7, which increased the minimum dispatch duration by 35%. This is very helpful in extending the life of the battery.

Task Manager shows suspended programs

3. Improvements in power management for runtime devices

In Windows 8, you can decide how to use power management. Will help us extend the life of the battery.

We work with all of our partners to improve the power management mechanism of Windows 8, resulting in lower power consumption and longer battery life.