Supermicro X11DPH-I User Manual page 85

Chapter 4: UEFI BIOS
longer time to provide a permanent repair on a raw element. The options are Auto, Soft
PPR, Hard PPR, and PPR Disabled.
Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory modules. The
options are Auto, 1866, 2000, 2133, 2400, 2666, and 2933. Note: 2933 MHz memory is
supported by 2nd Gen Intel Xeon Scalable-SP (82xx/62xx series) processors only.
Data Scrambling for DDR4
Select Enable to enable data scrambling for DDR4 memory to enhance system performance
and security. Select Auto for the default setting of the Memory Reference Code (MRC) to
set confi gure data scrambling for DDR4 setting. The options are Auto, Disable, and Enable.
tCCD_L Relaxation
If this feature is set to Auto, SPD (Serial Presence Detect) will automatically override
tCCD_L ("Column to Column Delay-Long", or "Command to Command Delay-Long" on the
column side) based on memory frequency. If this feature is set to Disable, tCCD_L will be
enforced based on the memory frequency. The options are Auto, and Disable.
tRWSR (Read to Write turnaround time for Same Rank) Relaxation
Select Enable to use the same tRWSR DDR timing setting among all memory channels,
and in which case, the worst case value among all channels will be used. Select Disable
to use different values for the tRWSR DDR timing settings for different channels as trained.
The options are Disable, and Enable.
2X Refresh
Select Enable for memory 2X refresh support to enhance memory performance. The options
are Enable, and Auto.
Page Policy
Use this feature to set the page policy for onboard memory support. The options are Closed,
Adaptive, and Auto.
Enable ADR
Select Enable for ADR (Async DIMM Self-Refresh) support to enhance memory performance.
The options are Disable and Enable.
Data Scrambling for NVDIMM
Select Enable to enable data scrambling support for onboard NVDIMM memory to improve
system performance and security. The options are Auto, Disable, and Enable.
Erase-Arm NVDIMMs
If this feature is set to Enable, the function that arms the NVDIMMs for safe operations in
the event of a power loss will be removed. The options are Enable and Disable.
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