Reference Guide

Table 4. Memory Settings details (continued)
Option Description
Dark Memory: Total Memory Available Enables or Disables dark memory feature. Dark Memory feature allows
software to change memory size. The option is set to Disabled in default,
need to be enabled by personality module.
Persistent Memory details
About this task
The Persistent Memory screen details can be found in the DCPMM User Guide at https://www.dell.com/poweredgemanuals.
Processor Settings
To view the Processor Settings screen, power on the system, press F2, and click System Setup Main Menu > System
BIOS > Processor Settings.
Table 5. Processor Settings details
Option Description
Logical Processor Each processor core supports up to two logical processors.
If this option is set to Enabled, the BIOS displays all the
logical processors. If this option is set to Disabled, the BIOS
displays only one logical processor per core. This option is set
to Enabled by default.
CPU Interconnect Speed Enables you to govern the frequency of the communication
links among the processors in the system.
NOTE: The standard and basic bin processors support
lower link frequencies.
The options available are Maximum data rate, 11.2 GT/s,
10.4 GT/s, and 9.6 GT/s. This option is set to Maximum
data rate by default.
Maximum data rate indicates that the BIOS runs the
communication links at the maximum frequency supported by
the processors. You can also select specific frequencies that
the processors support, which can vary.
For best performance, you should select Maximum data
rate. Any reduction in the communication link frequency
affects the performance of non-local memory access and
cache coherency traffic. In addition, it can slow access to
non-local I/O devices from a particular processor.
However, if power saving considerations outweigh
performance, reduce the frequency of the processor
communication links. Before reducing the frequency, you must
localize the memory and I/O access to the nearest NUMA
node to minimize the impact to system performance.
Virtualization Technology Enables or disables the virtualization technology for the
processor. This option is set to Enabled by default.
Directory Mode Enables or disables the directory mode. This option is set to
Enabled by default.
Adjacent Cache Line Prefetch Optimizes the system for applications that need high
utilization of sequential memory access. This option is set
to Enabled by default. You can disable this option for
applications that need high utilization of random memory
access.
Pre-operating system management applications 7