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2. Idle (CPU) - Wikipedia

   en.wikipedia.org/wiki/Idle_(CPU)

   Many operating systems, for example Windows, [1] Linux, [2] and macOS [3] will run an idle task, which is a special task loaded by the OS scheduler on a CPU when there is nothing for the CPU to do. The idle task can be hard-coded into the scheduler, or it can be implemented as a separate task with the lowest possible priority.

3. System Idle Process - Wikipedia

   en.wikipedia.org/wiki/System_Idle_Process

   However, the idle process does not use up computer resources (even when stated to be running at a high percent). Its CPU time "usage" is a measure of how much CPU time is not being used by other threads. In Windows 2000 and later the threads in the System Idle Process are also used to implement CPU power saving.

4. Task Manager (Windows) - Wikipedia

   en.wikipedia.org/wiki/Task_Manager_(Windows)

   Task Manager, previously known as Windows Task Manager, is a task manager, system monitor, and startup manager included with Microsoft Windows systems. It provides information about computer performance and running software, including names of running processes, CPU and GPU load, commit charge, I/O details, logged-in users, and Windows services.

5. Processor power dissipation - Wikipedia

   en.wikipedia.org/wiki/Processor_power_dissipation

   As a processor model's design matures, smaller transistors, lower-voltage structures, and design experience may reduce energy consumption. Processor manufacturers usually release two power consumption numbers for a CPU: typical thermal power, which is measured under normal load (for instance, AMD's average CPU power)

6. Underclocking - Wikipedia

   en.wikipedia.org/wiki/Underclocking

   Underclocking can also be performed on graphics card processor's GPUs, usually with the aim of reducing heat output. For instance, it is possible to set a GPU to run at lower clock rates when performing everyday tasks (e.g. internet browsing and word processing), thus allowing the card to operate at lower temperature and thus lower, quieter fan speeds.

7. Dynamic frequency scaling - Wikipedia

   en.wikipedia.org/wiki/Dynamic_frequency_scaling

   Dynamic frequency scaling (also known as CPU throttling) is a power management technique in computer architecture whereby the frequency of a microprocessor can be automatically adjusted "on the fly" depending on the actual needs, to conserve power and reduce the amount of heat generated by the chip.