Dell PowerEdge XE2420 EMC Installation and Service Manual - Page 36

Memory Settings, Table 10. System Information details continued, Table 11. Memory Settings details

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Table 10. System Information details (continued) Option Description System CPLD Version Specifies the current version of the system complex programmable logic device (CPLD) firmware. UEFI Compliance Version Specifies the UEFI compliance level of the system firmware. Memory Settings To view the Memory Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Memory Settings. Table 11. Memory Settings details Option System Memory Size System Memory Type System Memory Speed System Memory Voltage Video Memory System Memory Testing Memory Operating Mode Description Specifies the memory size in the system. Specifies the type of memory installed in the system. Specifies the system memory speed. Specifies the system memory voltage. Specifies the amount of video memory. Specifies whether the system memory tests are run during system boot. The two options available are Enabled and Disabled. This option is set to Disabled by default. Specifies the memory operating mode. The options is available are Optimizer Mode, Single Rank Spare Mode, Multi Rank Spare Mode, and Mirror Mode. This option is set to Optimizer Mode, by default. NOTE: The Memory Operating Mode option can have different default and available options depending on the memory configuration of your system. Current State of Memory Operating Mode Node interleaving ADDDC Setting Native tRFC Timing for 16 Gb DIMMs Opportunistic Self-Refresh Correctable Error Logging Specifies the current state of the memory operating mode. Specifies if Non-Uniform Architecture (NUMA) is supported. If this field is set to Enabled, memory interleaving is supported if a symmetric memory configuration is installed. If this field is set to Disabled, the system supports NUMA (asymmetric) memory configurations. This option is Disabled by default. Enables or disables ADDDC Setting feature. When Adaptive Double DRAM Device Correction (ADDDC) is enabled, failing DRAM's are dynamically mapped out. When set to Enabled it can have impact to system performance under certain workloads. This feature is applicable for x4 DIMMs only. This option is set to Enabled by default. Enables 16 Gb density to operate at their programmed Row Refresh Cycle Time (tRFC). Enabling this feature may improve system performance for some configurations. However, enabling this feature has no effect on configurations with 16 Gb 3DC/TSV DIMMs. This option is set to Disabled by default. Enables or disables opportunistic self-refresh feature. This option is set to Disabled by default and is not supported when DCPMM(s) are in the system. Enables or disables logging of correctable memory threshold error. This option is set to Enabled by default. 36 Pre-operating system management applications

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Table 10. System Information details (continued)
Option
Description
System CPLD Version
Specifies the current version of the system complex programmable
logic device (CPLD) firmware.
UEFI Compliance Version
Specifies the UEFI compliance level of the system firmware.
Memory Settings
To view the
Memory Settings
screen, power on the system, press F2, and click
System Setup Main Menu
>
System BIOS
>
Memory Settings
.
Table 11. Memory Settings details
Option
Description
System Memory Size
Specifies the memory size in the system.
System Memory Type
Specifies the type of memory installed in the system.
System Memory Speed
Specifies the system memory speed.
System Memory Voltage
Specifies the system memory voltage.
Video Memory
Specifies the amount of video memory.
System Memory Testing
Specifies whether the system memory tests are run during system boot.
The two options available are
Enabled
and
Disabled
. This option is set to
Disabled
by default.
Memory Operating Mode
Specifies the memory operating mode. The options is available are
Optimizer Mode, Single Rank Spare Mode, Multi Rank Spare Mode,
and Mirror Mode
. This option is set to
Optimizer Mode
, by default.
NOTE:
The
Memory Operating Mode
option can have different
default and available options depending on the memory configuration
of your system.
Current State of Memory Operating Mode
Specifies the current state of the memory operating mode.
Node interleaving
Specifies if Non-Uniform Architecture (NUMA) is supported. If this field is
set to
Enabled
, memory interleaving is supported if a symmetric memory
configuration is installed. If this field is set to
Disabled
, the system
supports NUMA (asymmetric) memory configurations. This option is
Disabled
by default.
ADDDC Setting
Enables or disables
ADDDC Setting
feature. When Adaptive Double
DRAM Device Correction (ADDDC) is enabled, failing DRAM's are
dynamically mapped out. When set to
Enabled
it can have impact to
system performance under certain workloads. This feature is applicable
for x4 DIMMs only. This option is set to
Enabled
by default.
Native tRFC Timing for 16 Gb DIMMs
Enables 16 Gb density to operate at their programmed Row Refresh Cycle
Time (tRFC). Enabling this feature may improve system performance for
some configurations. However, enabling this feature has no effect on
configurations with 16 Gb 3DC/TSV DIMMs. This option is set to
Disabled
by default.
Opportunistic Self-Refresh
Enables or disables opportunistic self-refresh feature. This option is set to
Disabled
by default and is not supported when DCPMM(s) are in the
system.
Correctable Error Logging
Enables or disables logging of correctable memory threshold error. This
option is set to
Enabled
by default.
36
Pre-operating system management applications