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Select Enable for memory 2X refresh support to enhance memory performance. The
options are Auto, Disable, and Enable.
CXL Type 3 Legacy
Select Enable to use the CXL Type 3 memory device, which can be supported by the
CXL Type 2 flows, for memory bandwidth and capacity expansion. The options are Dis-
able and Enable.
Note: This feature depends on the CXL Type 2 flow and the memory device used.
Volatile Memory Mode
Use this feature to select the volatile memory mode. The options are 1LM and 2LM.
Please note that this feature depends on the support of Intel Optane PMem 300 Series.
Note: This feature is available when your motherboard has the high bandwidth memory
(HBM) CPU installed and when "NUMA" (Advanced > ACPI Settings > NUMA) is set
to Enabled.
Memory Topology
This feature displays the information of onboard memory modules as detected by the
BIOS, for example:
P1-DIMMA1: 4800MT/s Hynix DRx8 32GB RDIMM
Page Policy
Page Policy
Use this feature to set your memory page policy. The options are Closed and Adaptive.
The Closed Page Policy is good for random memory access patterns. The Adaptive
Page Policy can reduce the average memory latency.
Memory RAS Configuration
Use this submenu to configure the following Memory Reliability_Availability_Service-
ability (RAS) settings.
Mirror Mode (Available when "ADDDC Sparing" is set to Disabled and "UEFI
ARM Mirror" is set to Disabled)
Use this feature to configure the mirror mode settings for all 1LM/2LM memory mod-
ules in the system which will create a duplicate copy of data stored in the memory to
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Chapter 4: UEFI BIOS
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