Dell Precision 7920 Rack Owner's Manual

The System Profile Settings screen details are explained as follows:

Menu Item

Description

System Profile

Sets the system profile. If you set the System Profile option to a mode other than Custom, the BIOS automatically sets the rest of the options. You can only change the rest of the options if the mode is set to Custom. By default, the System Profile

NOTE:The following parameters are available only when the System Profile is set to Workstation Performance.

CPU Power Management

Sets the CPU power management. By default, the Maximum Performance

Memory Frequency

Sets the memory frequency. By default, the Maximum Performance

Turbo Boost

Enables or disables the processor to operate in turbo boost mode. By default, the Turbo Boost option is set to Enabled.

Energy Efficient Turbo

Enables or disables the Energy Efficient Turbo.

Energy Efficient Turbo (EET) is a mode of operation where a processor’s core frequency is adjusted within the turbo range based on workload.

C1E

Enables or disables the processor to switch to a minimum performance state when it is idle. By default, the C1E option is set to Disabled.

C States

Enables or disables the processor to operate in all available power states. By default, the C States option is set to Enabled.

Write Data CRC

Enables or disables Write Data CRC. By default option is set to Disabled.

Collaborative CPU Performance Control

Enables or disables the CPU power management. When set to Enabled, the CPU power management is controlled by the OS DBPM and the System DBPM (DAPC). By default, the option is set to Disabled.

Memory Patrol Scrub

Sets the memory patrol scrub frequency. By default, the Memory Patrol Scrub option is set to Standard.

Memory Refresh Rate

Sets the memory refresh rate to either 1x or 2x. By default, the Memory Refresh Rate option is set to 1x.

Uncore Frequency

Selects the Processor Uncore Frequency.

Dynamic mode allows the processor to optimize power resources across the cores and uncore during runtime. The optimization of the uncore frequency to either save power or optimize performance is influenced by the setting of the Energy Efficiency Policy.

Energy Efficient Policy

Selects the Energy Efficient Policy.

The CPU uses the setting to manipulate the internal behavior of the processor and determines whether to target higher performance or better power savings.

Number of Turbo Boot Enabled Cores for Processor 1

NOTE: If there are two processors installed in the system, you see an entry for Number of Turbo Boost Enabled Cores for Processor 2.

Controls the number of turbo boost enabled cores for processor 1. By default, the maximum number of cores is all.

Monitor/Mwait

Enables the Monitor/Mwait instructions in the processor. By default, the Monitor/Mwait option is set to Enabled for all system profiles, except Custom.

NOTE:This option can be disabled only if the C States option in Custom mode is disabled.

NOTE:When C States is enabled in Custom mode, changing the Monitor/Mwait setting does not impact system power/performance.

CPU Interconnect Bus Link Power Management

Enables or disables CPU Interconnect Bus Link Power Management By default, the option is set to Disabled.

PCI ASPM L1 Link Power Management

Enables or disables PCI ASPM L1 Link Power Management. By default, the option is set to Disabled.