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Chapter 4: BIOS
Memory Configuration
Enforce POR
Select POR to enforce POR restrictions for DDR4 memory frequency and voltage
programming. The options are POR and Disable.
Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory modules. The
options are Auto, 1866, 2000, 2133, 2200, 2400, 2600, and 2666.
Data Scrambling for NVDIMM
Select Enable to enable data scrambling for onboard NVDIMM memory to enhance system
performance and security. The options are Auto, Disable, and Enable.
Data Scrambling for DDR4
Select Enable to enable data scrambling for DDR4 memory to enhance system performance
and security. The options are Auto, Disable, and Enable.
tCCD_L Relaxation
If this feature is set to Enable, SPD (Serial Presence Detect) will override tCCD_L ("Column
to Column Delay-Long", or "Command to Command Delay-Long" on the column side.) If
this feature is set to Disable, tCCD_L will be enforced based on the memory frequency.
The options are Enable and Disable.
Enable ADR
Select Enable for ADR (Automatic Diagnostic Repository) support to enhance memory
performance. The options are Enable and Disable.
2X REFRESH
This option allows the user to select 2X refresh mode. The options are Auto, Enabled,
and Disabled.
Page Policy
This feature allows the user to determine the desired page mode for IMC. When Auto is
selected, the memory controller will close or open pages based on the current operation.
Closed policy closes that page after reading or writing. Adaptive is similar to open page
policy, but can be dynamically modified. The default is Auto.
IMC Interleaving
This feature allows the user to configure Integrated Memory Controller (IMC) Interleaving
settings.The options are Auto, 1-way Interleave, and 2-way Interleave.
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