Supermicro X13SEI-TF User Manual page 79

Legacy ADR Mode
Use this feature to support the Legacy ADR mode to enhance memory performance. The
options are Disable, Enable, and Auto.
DDR 2x Refresh Enable
Select Enable for memory 2X refresh support to enhance memory performance. The
options are Auto, Diable, and Enable.
CXL Type 3 Legacy
Use this feature to enable or disable legacy support for CXL Type 3 devices. The options
are Enable and Disable.
Memory Topology

This feature displays the information of onboard memory modules as detected by the
BIOS.
Memory RAS Configuration Setup

Use this submenu to configure the following Memory Reliability_Availability_Service-
ability (RAS) settings.
Mirror Mode
UEFI ARM Mirror
Correctable Error Threshold
Use this feature to specify the threshold value for correctable memory-error logging.
This sets a limit on the maximum number of events that can be logged in the memory
error log at a given time. The default setting is 512.
The following information is displayed:
•
Leaky Bucket Low Bit
•
Leaky Bucket High Bit
Patrol Scrub
Patrol Scrubbing is a process that allows the CPU to correct correctable memory errors
detected in a memory module and send the corrections to the requestor (the original
source). When this feature is set to Enable, the IO hub will read and write back one
cache line every 16K cycles if there is no delay caused by internal processing. By using
this method, roughly 64 GB of memory behind the IO hub will be scrubbed every day.
The options are Disabled and Enable at End of POST. (POST: Power On Self Test)
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Chapter 4: UEFI BIOS