Operating Modes
Item | Options | Description |
---|---|---|
Choose Operating Mode |
| You can select the operating mode based on your preference. Power savings and performance are highly dependent on the hardware and the software running on the system. According to the selected operating mode, related low-level settings will be automatically changed and can not be changed individually. To set low-level settings individually, select [Custom Mode]. [Efficiency – Favor Performance] is comparable to Intel’s Optimized Power Mode (OPM). Note For maximum performance on applications that don't utilize all CPU cores, it is best to select [Maximum Performance] first, then select [Custom] and enable C-states. Doing so will allow the active cores to achieve maximum turbo uplift. Alternatively, unused cores can be disabled under |
Acoustic Mode |
| Acoustic modes reduce system acoustics by limiting fan speeds. [Mode 2] attempts to reduce acoustics more aggressively than [Mode 1]. When the acoustic mode is set to Disabled, no system fan speed limits are applied. Throttling may momentarily occur when the acoustic mode is set to Mode 1 or Mode 2. To maintain system operation during fan failures, high ambient temperatures or component over temperature conditions, acoustic mode fan limits will be overridden to ensure adequate system airflow. For the high ambient temperature threshold for a specific system, refer to the system documentation. |
Memory Speed |
| You can select the desired memory speed. [Maximum performance] maximizes the performance. [Balanced] offers a balance between performance and power. [Minimal power] 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. |
CPU P-state Control |
| You can select to control CPU P-states (performance states). [None]: Disables all P-states and processors work either at rated frequency or in Turbo Mode (if Turbo Mode is enabled). [Legacy]: CPU P-states will be presented to the OS and the OS power management (OSPM) will directly control which P-state is selected. [Autonomous]: P-states are fully controlled by system hardware. No P-state support is required in the OS or VM. [Cooperative] is a combination of [Legacy] and [Autonomous]. 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. |
C1 Enhanced Mode |
| [Enabled]: Saves power by halting processor cores that are idle. Using this feature requires an operating system that supports C1E state. Changes take effect after the system rebooted. 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 > C-States > [Legacy]/[Disabled] . |
C-States |
| C-states reduces power consumption during the idle time. [Legacy]: The operating system initiates the C-state transitions. For E5/E7 processors, ACPI C1/C2/C3 map to Intel C1/C3/C6. For 6500/7500 processors, ACPI C1/C3 map to Intel C1/C3 (ACPI C2 is not available). Some OS may defeat the ACPI mapping (e.g., Intel idle driver). 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. |