Dell EMC PowerEdge R940 Installation And Service Manual page 52

Option Description
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
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.
CPU Interconnect Enables or disables the CPU Interconnect Bus Link Power Management. This option is set to Enabled by default.
Bus Link Power
Management
PCI ASPM L1 Link Enables or disables the PCI ASPM L1 Link Power Management. This option is set to Enabled by default.
Power
Management
System Security
You can use the System Security screen to perform specific functions such as setting the system password, setup password and disabling
the power button.
Viewing System Security
To view the System Security screen, perform the following steps:
1 Turn on, or restart your system.
2 Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3 On the System Setup Main Menu screen, click System BIOS.
4 On the System BIOS screen, click System Security.
System Security Settings details
The System Security Settings screen details are explained as follows:
Option Description
In-Band When set to Disabled, this setting will hide the Management Engine's (ME), HECI devices, and the system's IPMI
Manageability devices from the operating system. This prevents the operating system from changing the ME power capping
Interface settings, and blocks access to all in-band management tools. All management should be managed through out-of-
band. This option is set to Enabled by default.
52 Pre-operating system management applications
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.
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.