Deployment Guide

System BIOS
44 Setting up BIOS on 15th Generation (15G) Dell EMC PowerEdge Servers | 508
processor power states to achieve
Performance/Watt maximized at all
utilization levels and workload types
while still meeting performance
requirements.
• The OS DBPM (Demand Based Power
Management) means that it is the OS that
controls the processor’s power
management.
Maximum Performance mode keeps the
processor running at the highest frequency all
the time.
Memory Frequency
• Maximum Performance
• 3400MHz
• 3200MHz
• 2933MHz
• 2666MHz
• 2400MHz
• 2133MHz
• 1866MHz
• Maximum Reliability
Governs the BIOS memory frequency. The
variables that govern maximum memory
frequency include the maximum rated
frequency of the DIMMs, the DIMMs per
channel population, the processor choice, and
this BIOS option. Additional power savings
can be achieved by reducing the memory
frequency, at the expense of reduced
performance.
Read-only unless System Profile is set to
Custom
Turbo Boost
• Enabled
• Disabled
If the current operating environment allows,
the Turbo Boost mode allows the processor to
engage to a higher frequency than the
processor’s nominal or rated frequency. This
results in a higher system performance.
Turbo Boost is engaged on a per-socket basis.
If some of the cores of a socket are idle, then
other cores of the same socket can go to a
higher processor performance state.
C1E
• Enabled
• Disabled
Allows you to enable or disable the processor
to switch to C1E (Enhanced Halt State) when
it is idle.
Note: This option is only available on systems
with Intel processors.
C States
• Enabled
• Disabled
Allows you to enable or disable the processor
to operate in all available power states.
Write Data CRC
• Enabled
• Disabled
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.
Memory Patrol Scrub
• Extended
• Standard
• Disabled
Patrol Scrubbing is a feature that searches the
memory for errors and repairs correctable
errors to prevent the accumulation of
memory errors.
• When set to Disabled, no Patrol
Scrubbing will occur.