Dell PowerEdge R750 EMC BIOS and UEFI Reference Guide - Page 6

Memory Settings, Table 3. System Information details continued, Table 4. Memory Settings details

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Table 3. 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 4. Memory Settings details Option Description System Memory Size Specifies the size of the system memory. System Memory Type Specifies the type of memory installed in the system. System Memory Speed Specifies the speed of the system memory. System Memory Voltage Specifies the voltage of the system memory. Video Memory Specifies the size 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 option is available and is set to Optimizer Mode, by default. Current State of Memory Operating Mode Specifies the current state of the memory operating mode. Node Interleaving Enables or disables the Node interleaving option. Specifies if the NonUniform Memory Architecture (NUMA) is supported. If this field is set to Enabled, memory interleaving is supported if a symmetric memory configuration is installed. If the field is set to Disabled, the system supports NUMA (asymmetric) memory configurations. This option is set to Disabled by default. ADDDC Settings Enables or disables ADDDC Setting feature. When Adaptive Double DRAM Device Correction (ADDDC) is enabled, failing DRAMs are dynamically mapped out. When set to Enabled it can impact the system performance under certain workloads. This feature is applicable for x4 DIMMs only. This option is set to Disabled by default. Memory training When option is set to Fast and memory configuration is not changed, the system uses previously saved memory training parameters to train the memory subsystems and system boot time is also reduced. If memory configuration is changed, the system automatically enables Retrain at Next boot to force one-time full memory training steps, and then go back to Fast afterward. When option is set to Retrain at Next boot, the system performs the force one-time full memory training steps at next power on and boot time is slowed on next boot. When option is set to Enabled, the system performs the force full memory training steps on every power on and boot time is slowed on every boot. Correctable Error Logging Enables or disables correctable error logging. This option is set to Enabled by default. 6 Pre-operating system management applications

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Table 3. 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 4. Memory Settings details
Option
Description
System Memory Size
Specifies the size of the system memory.
System Memory Type
Specifies the type of memory installed in the system.
System Memory Speed
Specifies the speed of the system memory.
System Memory Voltage
Specifies the voltage of the system memory.
Video Memory
Specifies the size 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 option is available and is set to
Optimizer Mode
, by default.
Current State of Memory Operating Mode
Specifies the current state of the memory operating mode.
Node Interleaving
Enables or disables the Node interleaving option. Specifies if the Non-
Uniform Memory Architecture (NUMA) is supported. If this field is set
to
Enabled
, memory interleaving is supported if a symmetric memory
configuration is installed. If the field is set to
Disabled
, the system
supports NUMA (asymmetric) memory configurations. This option is set
to
Disabled
by default.
ADDDC Settings
Enables or disables ADDDC Setting feature. When Adaptive Double DRAM
Device Correction (ADDDC) is enabled, failing DRAMs are dynamically
mapped out. When set to
Enabled
it can impact the system performance
under certain workloads. This feature is applicable for x4 DIMMs only. This
option is set to
Disabled
by default.
Memory training
When option is set to
Fast
and memory configuration is not changed,
the system uses previously saved memory training parameters to train
the memory subsystems and system boot time is also reduced. If memory
configuration is changed, the system automatically enables
Retrain at
Next boot
to force one-time full memory training steps, and then go back
to
Fast
afterward.
When option is set to
Retrain at Next boot
, the system performs the
force one-time full memory training steps at next power on and boot time
is slowed on next boot.
When option is set to
Enabled
, the system performs the force full
memory training steps on every power on and boot time is slowed on
every boot.
Correctable Error Logging
Enables or disables correctable error logging. This option is set to
Enabled
by default.
6
Pre-operating system management applications