Quick CPU - Advanced CPU settings
IMPORTANT: Configuration settings described on this page will be applied directly to your CPU hardware registers, and most of them will be reset back to default values upon restart, deep sleep or system power off. Modifying this settings can potentially void your CPU warranty. Please proceed with care !
Description
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.
Intel Speed Shift and Voltage Regulator Controls
Intel Speed Shift / Hardware Controled Performance
Intel Speed Shift technology also known as HWP (Hardware p-state) or Hardware Controlled Performance delivers quicker responsiveness with short duration performance shifts, by allowing the processor to more quickly select its best operating frequency and voltage for optimal performance and power efficiency.
Detailed information about Intel Speed Shift / HWP settings and application controls is available here: Performance adjustment on Speed Shift enabled systems
Integrated Voltage Regulator (FIVR Control)
Integrated voltage regulator was introduced in 4th Generation Intel® Core™ processors (code name Haswell). Voltage regulator supplies variable voltage to individual domains within the processor based on their current operating conditions (frequencies, power consumption, heat etc). Integrated voltage regulator is used by the processor to optimize for both performance and energy consumption by dynamically adjusting power delivery to various processor components (core, cache, graphics and system agent).
Detailed information about Integrated Voltage Regulator (FIVR Control) settings and application controls, is available here: Integrated Voltage Regulator Settings
General Controls
Turbo Boost
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.
Enhanced SpeedStep
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
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.
- 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.
C1E
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.
Bi-Directional PROCHOT
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
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.
Turbo power limits
This setting gives the ability to define power limitation for the package. Power limitation is defined in terms of average power usage over a time window specified. Two power limits can be specified, corresponding to time windows of different sizes. Clamping control for each power limit would permit the processor cores to go below the requested state to meet the power limits. And finally, the lock mechanism gives the ability to enforce power limit settings. Once the lock check box is checked, the power limit settings are static and un-modifiable until next reset (restart/deep sleep ).
Turbo power limit form controls
- 1 - Enable package power limit
- 2 - If checked, allows going below requested P/T state setting during the time window specified in #4
- 3 - Sets the average power usage limit of the CPU package corresponding to time window
- 4 - Sets the time window for power limit
Turbo ratios
This setting specifies Maximum Turbo limit ratios (multiplier settings), depending on number of CPU cores active.
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