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Dell PowerEdge R740 BIOS and UEFI Reference Guide

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System Profile Settings details

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The System Profile Settings screen details are explained as follows:
Option
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.This option is set to Performance Per Watt Optimized (DAPC) by default. DAPC is Dell Active Power Controller.
NOTE All the parameters on the system profile setting screen are available only when the System Profile option is set to Custom.
CPU Power Management
Sets the CPU power management. This option is set to System DBPM (DAPC) by default. DBPM is Demand-Based Power Management.
Memory Frequency
Sets the speed of the system memory. You can select Maximum Performance, Maximum Reliability, or a specific speed. This option is set to Maximum Performance by default.
Turbo Boost
Enables or disables the processor to operate in the turbo boost mode. This option is set to Enabled by default.
C1E
Enables or disables the processor to switch to a minimum performance state when it is idle. This option is set to Enabled by default.
C States
Enables or disables the processor to operate in all available power states. This option is set to Disabled by default for performance profile and is set to Enabled by default for all other profiles.
Write Data CRC
Enables or disables the Write Data CRC. This option is set to Disabled by default.
Memory Patrol Scrub
Sets the memory patrol scrub frequency. This option is set to Standard by default.
Memory Refresh Rate
Sets the memory refresh rate to either 1x or 2x. This option is set to 1x by default.
Uncore Frequency
Enables you to select the Processor Uncore Frequency option.Dynamic mode enables the processor to optimize power resources across cores and uncores 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 option.
Energy Efficient Policy
Enables you to select the Energy Efficient Policy option.

The CPU uses the setting to manipulate the internal behavior of the processor and determines whether to target higher performance or better power savings. This option is set to Balanced Performance by default.

Number of Turbo Boost Enabled Cores for Processor 1
NOTE If there are two processors installed in the system, you will see an entry for Number of Turbo Boost Enabled Cores for Processor 2.
NOTE If there are four processors installed in the system, you will see an entry for Number of Turbo Boost Enabled Cores for Processor 4.
Controls the number of turbo boost enabled cores for Processor 1. The maximum number of cores is enabled by default.
Monitor/Mwait
Enables the Monitor/Mwait instructions in the processor. This option is set to Enabled for all system profiles, except Custom by default.
NOTE This option can be disabled only if the C States option in the Custom mode is set to disabled.
NOTE When C States is set to Enabled in the Custom mode, changing the Monitor/Mwait setting does not impact the system power or performance.
CPU Interconnect Bus Link Power Management
Enables or disables the CPU Interconnect Bus Link Power Management. This option is set to Enabled by default.
PCI ASPM L1 Link Power Management
Enables or disables the PCI ASPM L1 Link Power Management. This option is set to Enabled by default.
Intel Persistent Memory CR QoS
Controls the tuning recipe for Quality of Service (QoS) knobs. Disabled by default. Method 1 is recommended for 2-2-2 memory configurations in App-Direct. Method 2 is recommended for other memory configurations in App-Direct. Method 3 is recommended for 1 DIMM per channel configurations.
Intel Persistent Memory Performance Setting
Controls the thresholds that trigger switching between near (RDIMM/LRDIMM) and far (PMem) memory. BW Optimized, selected by default, optimizes for RDIMM/LRDIMM and PMem bandwidth. Latency Optimized offers better RDIMM/LRDIMM latency in the presence of PMem. Balanced Profile optimizes performance with Memory Mode configured PMem.

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