Operating Modes

Description

Select the operating mode based on your preference.

Power savings and performance are highly dependent on hardware and software running on the system.

Efficiency – Favor Performance is the default setting.

Select the desired memory speed mode.

[Maximum performance] mode maximizes performance. [Balanced] mode offers a balance between performance and power. [Minimal power] mode maximizes power savings.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose [Custom Mode] for "Choose Operating Mode" in "Operating Modes" located under "System Setting" submenu.

Max Performance is the default setting.

[Disabled] provides maximum performance but minimum power savings. [Automatic] is suitable for most applications.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode >.Custom Mode.

Disabled is the default setting.

Select the method to control CPU P-states (performance states).

[None] disables all P-states and the CPUs run at either their rated frequency or in turbo mode (if "Turbo Mode" is enabled).

[Legacy]: The CPU P-states will be presented to the OS and the OS power management (OSPM) will directly control which P-state is selected.

[Autonomous]: The P-states are controlled fully by system hardware. No P-state support is required in the OS or VM.

[Cooperative] is a combination of [Legacy] and [Autonomous]. The P-states are still controlled by hardware but the OS can provide hints to the hardware for P-state limits, indicating the desired setting.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

Autonomous is the default setting.

[Enabled]: Save power by halting idle CPU cores. To use this feature, an OS that supports C1E state must be installed. Setting change takes effect after the next reboot.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose [Custom Mode] for "Choose Operating Mode" in "Operating Modes" and [Legacy]/[Disabled] in "C-States" located under "System Setting" submenu.

C1E status is changeable only when "C-states" is not [Autonomous].

Enabled is the default setting.

Select the desired CPU UPI link frequency.

[Maximum Performance] mode maximizes performance. [Balanced] mode offers a balance between performance and power. [Minimal Power] mode maximizes power savings.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode >.Custom Mode.

Disabling one of the CPU UPI links can save power. To achieve the maximum performance, all UPI links should be enabled.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

[Enabled] can boost the overall CPU performance when all CPU cores are not being fully utilized. A CPU core can run above its rated frequency for a short period of time when it is in turbo mode.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

Enabled is the default setting.

[Enabled]: The CPU's optimal turbo frequency will be tuned dynamically based on CPU utilization. This item is also influenced by "Power/Performance Bias".

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose [Custom Mode] for "Choose Operating Mode" in "Operating Modes" and [Enabled] in "Turbo Mode" located under "System Setting" submenu.

Enabled is the default setting.

C-states reduce CPU idle power.

[Legacy]: The OS initiates the C-state transitions. ACPI C1/C2/C3 map to Intel C1/C3/C6.

[Autonomous]: HALT and C1 request get converted to C6 requests in hardware.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode >.Custom Mode.

Autonomous is the default setting.

Power/Performance Bias determines how aggressively the CPU will be power managed and placed into turbo.

[Platform Controlled]: The system controls the setting.

[OS Controlled] allows the OS to control it. Not all OSs support this feature.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

Platform Controlled is the default setting.

[Maximum Performance] allows the most aggressive use of turbo and power management functions are disabled, thereby increasing power consumption.

[Minimal Power] disables turbo and maximizes the use of power management features.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

Efficiency - Favor Performance is the default setting.

Enable/Disable ADDDC Sparing.

[Adaptive] improves the performance of applications with a highly localized memory access pattern; [Closed] benefits applications that access memory more randomly.

Closed is the default setting.

Enabled is the default setting.