Power

Power/Performance bias determines how aggressively the processor will be power managed and placed into Turbo. With [Platform Controlled], the system controls the setting. Selecting [OS Controlled] allows the operating system to control it. Not all OSes support this feature.

• [Performance]: allows the most aggressive use of Turbo. Power management functions are disabled, thereby increasing power consumption.

• [Power]: disables Turbo and maximizes the use of power management features.

Workload configuration bias is used to tune the system’s I/O bandwidth profile. This setting tunes how aggressively the system will allocate processor core and uncore frequency to handle I/O requests.

• [Balanced]: CPU core and uncore frequency are balanced to provide equal performance weighting between I/O tasks and application workload threads.

• [I/O sensitive]: CPU core and uncore frequency are weighted to allocate enough resources to provide high I/O bandwidth when CPU cores are at low utilization.

[I/O sensitive] is recommended for expansion cards that require high bandwidth I/O when the processor cores are idle to allow enough frequency for the workload.

PCIe Active State Power Management (ASPM) is a PCIe power saving feature. It puts the PCIe link into a low power mode when the link is idle.

• [Auto]: enables ASPM on PCIe endpoint adapters that support it.

• [Disabled]: disables ASPM for all PCIe endpoints.