Supermicro X10DRFR User Manual page 75

Chapter 4: AMI BIOS
Link Frequency Select
Use this item to select the desired frequency for QPI Link connections. The op-
tions are 6.4GB/s, 8.0GB/s, 9.6GB/s, Auto, and Auto Limited.
Link L0p Enable
Select Enable for Link L0p support. The options are Enable and Disable.
Link L1 Enable
Select Enable for Link L1 support. The options are Enable and Disable.
COD Enable (Available when the OS and the CPU support this feature)
Select Enabled for Cluster-On-Die support to enhance system performance in
cloud computing. The options are Enable, Disable, and Auto.
Early Snoop (Available when the OS and the CPU support this feature)
Select Enabled for Early Snoop support to enhance system performance. The
options are Enable, Disable, and Auto.
Isoc Mode
Select Enabled for Isochronous support to meet QoS (Quality of Service) require-
ments. This feature is especially important for Virtualization Technology. The
options are Enable and Disable.
Memory Configuration
Enforce POR
Select Enable to enforce POR restrictions on DDR4 frequency and voltage
programming. The options are Enabled and Disabled.
Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory
modules. The options are Auto, 1333, 1400, 1600, 1800, 1867, 2000, 2133,
2200, and 2400.
Data Scrambling
Select Enabled to enable data scrambling to enhance system performance and
data integrity. The options are Auto, Disabled and Enabled.
Enable ADR
Asynchronous DRAM Refresh (ADR), supported by the Haswell-EP/EN pro-
cessors, provides a mechanism to preserve the key data in DDR4 NVDIMM
system memory when an AC power-supply failure occurs. The options are ADR
+ NVDIMMs and Disabled.
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