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Chapter 7: BIOS
7-13
Link Speed Mode
Use this item to select the data transfer speed for QPI Link connections. The
options are
Fast and Slow.
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 Enable 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 Enable for Early Snoop support to enhance system performance. The
options are Enable, Disable,
and Auto .
Isoc Mode
Select Enable 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 Enabled 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, 2400, 2600, 2667, and Reserved (Do not select Reserved).
ECC Support
Select Enable to enable Error Checking & Correction (ECC) support for onboard
memory modules. The options are
Auto , Enable and Disable.