How does "Power Throttling" technology save energy in Windows?

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"Power Throttling" is a power-saving technology introduced in Windows 10 Fall Creators Update (version 1709). It aims to reduce the power consumption of background processes running on a Windows system, thereby improving energy efficiency and extending battery life on mobile devices.

Here's how Power Throttling works:

  1. Detection of background processes: Windows identifies the processes running in the background based on their resource usage and activity patterns. Processes that are deemed less critical or less actively used are considered as background processes.

  2. Power management prioritization: Once background processes are identified, Windows applies power management techniques to prioritize them for power consumption reduction. Instead of allowing these processes to run at full power, Power Throttling selectively reduces their CPU utilization by dynamically adjusting their CPU priority and execution time.

  3. Energy-efficient scheduling: Windows schedules background processes to run during periods of low system activity. By taking advantage of idle system resources, Power Throttling minimizes the impact on foreground tasks, such as user-initiated applications that require immediate responsiveness.

  4. Resource access control: Power Throttling also regulates the frequency of background processes' access to certain hardware resources, such as the disk and network, to further conserve energy.

By intelligently managing the power consumption of background processes, Power Throttling aims to reduce unnecessary CPU utilization and, consequently, decrease power consumption. This technology is particularly beneficial for mobile devices like laptops and tablets, as it helps extend battery life by reducing the energy consumed by background tasks without compromising the overall user experience.

It's important to note that Power Throttling is a dynamic and automated technology implemented within the Windows operating system. It can be adjusted and fine-tuned based on factors like user preferences, system settings, and workload requirements to strike the right balance between power savings and performance.