Supermicro SUPERSERVER 1028UX-LL1-B8, User Manual

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Chapter 7: BIOS
7-15 7-14
SUPERSERVER 1028UX-LL1-B8/LL2-B8/LL3-B8 User's Manual
Link Frequency Select
Use this item to select the CPU Frequency. The options are 6.4 GB/s, 8.0 GB/s,
9.6 GB/s,
Auto , 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, 2400, 2600, 2667, and Reserved (Do not select Reserved).
Data Scrambling
Select Enabled to enable data scrambling to enhance system performance and
data integrity. The options are
Auto , Disabled and Enabled.
DRAM RAPL Baseline
Use this feature to set the run-time power-limit baseline for DRAM modules. The
options are Disable, DRAM RAPL Mode 0, and
DRAM RAPL Mode 1 .
Set Throttling Mode
Throttling improves reliability and reduces power consumption in the proces-
sor via automatic voltage control during processor idle states. The options are
Disabled and
CLTT (Closed Loop Thermal Throttling).
Socket Interleave Below 4GB
Select Enabled for the memory above the 4G Address space to be split between
two sockets. The options are Enable and Disable .
A7 Mode
Select Enabled to support the A7 (Addressing) mode to improve memory per-
formance. The options are
Enable and Disable.

DIMM Information
This item displays the status of a DIMM module specified by the user.
•
P1-DIMMA1 - P1-DIMMD1
•
P2-DIMME1 - P2-DIMMH1

Memory RAS (Reliability_Availability_Serviceability)
Configuration
Use this submenu to configure the following Memory RAS settings.
RAS Mode
When Disable is selected, RAS is not supported. When Mirror is selected, the
serverboard maintains two identical copies of all data in memory for data backup.
When Lockstep is selected, the serverboard uses two areas of memory to run
the same set of operations in parallel to boost performance. The options are
Disable , Mirror, and Lockstep Mode.
Memory Rank Sparing
Select Enable to enable memory-sparing support for memory ranks to improve
memory performance. The options are Disabled and Enabled.