Chapter 4: UEFI BIOS
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LLC Dead Line Alloc
Select Enable to opportunistically fill the deadlines in LLC (Last Level Cache). The options
are
Enable
, Disable,
and Auto.
Isoc Mode
Select Enable to enable Isochronous support to meet QoS (Quality of Service) requirements.
This feature is especially important for Virtualization Technology. The options are Disable,
Enable, and
Auto
.
Memory Configuration
Enforce POR
Select POR to enforce POR restrictions for DDR4 memory frequency and voltage
programming settings. The options are
POR
and Disable.
PPR Type
Use this feature to set the Post Package Repair type. The options are
Auto
, Hard PPR, Soft
PPR, and PPR 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 enabled, 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 Disable, and
Auto
.
tRWSR Relaxation
Select Enable to use the same tRWSR DDR timing setting among all memory channels,
in which case, the worst 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
.
