Supermicro SuperServer 5019D-FN8TP, Руководство пользователя, Страница: 63 / 128

Chapter 6: BIOS
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SNC
Sub NUMA Clustering (SNC) is a feature that breaks up the Last Level Cache (LLC) into
clusters based on address range. Each cluster is connected to a subset of the memory
controller. Enabling SNC improves average latency and reduces memory access conges-
tion to achieve higher performance. Select Auto for 1-cluster or 2-clusters depending on
IMC interleave. Select Enable for Full SNC (2-clusters and 1-way IMC interleave). The
options are
Disable , Enable, and Auto.
Isoc Mode
Isochronous (Isoc) mode allows time-sensitive processes to be given priority. The options
are Disable, Enable, and
Auto .

Memory Configuration
Enforce POR
Select POR (Plan of Record) to enforce POR restrictions on DDR4 frequency and volt-
age programming. The options are
POR
and Disable.
Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory modules.
The options are
Auto , 2133, 2400, and 2666.
Data Scrambling for DDR4
Use this feature to enable or disable data scrambling for DDR4 memory. The options
are
Auto , Disable, and Enable.
tCCD_L Relaxation
Select Auto to get TCDD settings from SPD (Serial Presence Detect) and implement into
memory RC code to improve system reliability. Select Disable for TCCD to follow Intel
POR. The options are Disable and
Auto .
Enable ADR
Select Enable for ADR (Automatic Diagnostic Repository) support to enhance memory
performance. The options are
Disable and Enable .
2X REFRESH
Use this feature to select the memory controller refresh rate to 2x refresh mode. The
options are
Auto
and Enable.