Table 25. System Profile Settings details
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 (OS)
by default. Other
options include
Performance
and
Custom
.
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
OS DBPM
by default. Other option includes
Maximum Performance
.
Memory Frequency
Sets the speed of the system memory. You can select
Maximum Performance
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. C States allow the
processor to enter lower power states when idle. When set to
Enabled
(OS controlled) or when set
to
Autonomous
(if hardware controlled is supported), the processor can operate in all available
Power States to save power, but may increase memory latency and frequency jitter. This option is
set to
Enabled
by default.
Write Data CRC
When set to
Enabled
, DDR4 data bus issues are detected and corrected during 'write' operations.
Two extra cycles are required for CRC bit generation which impacts the performance. Read-only
unless System Profile is set to
Custom
. This option is set to
Disabled
by default.
Memory Patrol Scrub
Sets the memory patrol scrub mode. 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 {Varref: term1_singular}system ,
you will see an entry for Number of Turbo Boost Enabled Cores for Processor 2
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.
Pre-operating system management applications
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