All the settings in this section are CPU dependant and will be enabled/disabled based on your CPU model. Another factor that can affect the availability of a particular setting is the fact that it’s not locked by your system BIOS.
If supported by your CPU this setting will enable (if checked) or disable (if unchecked) Turbo Boost. If the power conservation is a priority, unchecking this check box will ensure that your CPU will never attempt to enter frequencies in turbo range. NOTE: this setting can olso be controlled by software on the main screen with Turbo Boost index. Setting this index to 0 will disable the Turbo Boost.
In short Enhanced SpeedStep allows the processor to meet the instantaneous performance needs of the operation being performed, while minimizing power consumption and heat generation.
Enhanced Intel SpeedStep® Technology is an advanced means of enabling CPU high performance while also meeting the power-conservation needs of specific systems. Separation of voltage and frequency changes
By stepping voltage up and down in small increments, the processor is able to reduce periods of system unavailability that occur during frequency change. The system is then able to transition between voltage and frequency states more often, improving balance between power and performance.
Clock partitioning and recovery
The bus clock continues running during state transition, even when the core clock and phase-locked loop are stopped, which allows logic to remain active. The core clock is also able to restart far more quickly under Enhanced Intel SpeedStep Technology than under previous architectures.
Also known as enhanced halt state C1E is also a power saving feature and when enabled will allow your CPU to switch to the Minimum Enhanced Intel SpeedStep Technology operating point, when all execution cores enter MWAIT (C1). In some cases disabling this feature can improve CPU latency.
Hardware Duty Cycling (HDC)
Hardware Duty Cycling (HDC), enables the processor to automatically force its components inside the CPU physical package into idle state. For example, the processor may selectively force one or multiple cores into an idle state depending on the internal CPU package state, as well as lower effective CPU frequency. HDC is a power saving feature during low system load.
Enabling this feature will enable the Bi-directional signal. This will allow other components within the CPU package to signal if the CPU has exceeded its maximum thermal condition and whether or not it should activate the Thermal Control Circuit (TCC).
Clock modulation is a feature that enables implementation of power management policies that will reduce power consumption. This feature is an addition to power management implemented by thermal monitoring sensors. If set to non 0 value, it will internally reduce the power and speed of your CPU.
Performance / Energy policy
Another power management feature that gives the ability to choose a preference between maximum performance and energy/power conservation.
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