Supermicro SuperServer 5019P-WT - Page 41

Chapter 6: BIOSSuperServer 5019P-WT/WTR User's Manual
7574
Isoc Mode
Isochronous (Isoc) mode allows time-sensitive processes to be given priority. The options
are Disable, Enable, and Auto.
Memory Conguration
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, 1866, 2000, 2133, 2200, 2400, 2600, and 2666.
Data Scrambling for NVDIMM
Use this festure to enable or disable data scrambling for non-volatile DIMM (NVDIMM)
memory. The options are Auto, Disable, and Enable.
Data Scrambling for DDR4
Use this festure to enable or disable data scrambling for DDR4 memory. The options are
Auto, Disable, and Enable.
tCCD_L Relaxation
Select Enable 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 Enable.
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.
Memory Topology
This feature displays DIMM population information.
Chipset Conguration
Warning: Setting the wrong values in the following features may cause the system to malfunc-
tion.
North Bridge

UPI Conguration
The following UPI information will display:
• Number of CPU
• Number of IIO
• Current UPI Link Speed
• Current UPI Link Frequency
• UPI Global MMIO Low Base / Limit
• UPI Global MMIO High Base / Limit
• 
Degrade Precedence

Topology Precedence to degrade Features. Select Feature Precedence to degrade Topol-
ogy. The options are Topology Precedence and Feature Precedence.
Link L0p Enable
Select Enable for the QPI to enter the L0p state for power saving. The options are Dis-
able, Enable, and Auto.
Link L1 Enable
Select Enable for the QPI to enter the L1 state for power saving. The options are Dis-
able, Enable, and Auto.
IO Directory Cache (IODC)
IO Directory Cache is an 8-entry cache that stores the directory state of remote IIO writes
and memory lookups, and saves directory updates. Use this feature to lower cache to
cache (C2C) transfer latencies. The options are Disable, Auto, Enable for Remote InvItoM
Hybrid Push, InvItoM AllocFlow, Enable for Remote InvItoM Hybrid AllocNonAlloc, and
Enable for Remote InvItoM and Remote WViLF.