Supermicro X11DAC User Manual page 87

Socket 0 PCIeBr0D00F0 - Port 0/DMI (Available for CPU 1
Configuration only)
Link Speed
Use this feature to configure the link speed of a PCIe port specified by the user. The options
are Auto, Gen 1 (Generation 1) (2.5 GT/s), Gen 2 (Generation 2) (5 GT/s), and Gen 3
(Generation 3) (8 GT/s)
The following information will be displayed:
•
PCI-E Port Link Status
•
PCI-E Port Link Max
•
PCI-E Port Link Speed
PCI-E Port Max (Maximum) Payload Size (Available for CPU 1 Configuration only)
Select Auto for the system BIOS to automatically set the maximum payload value for a
PCIe device specified by to user for system performance enhancement. The options are
Auto, 128B, and 256B.
IOAT Configuration
Disable TPH (TLP Processing Hint)
TPH is used for data-tagging with a destination ID and a few important attributes. It can
send critical data to a particular cache without writing through to memory. Select No in this
item for TLP Processing Hint support, which will allow a "TPL request" to provide "hints"
to help optimize the processing of each transaction occurred in the target memory space.
The options are Yes and No.
Prioritize TPH (TLP Processing Hint) (Available when Disable TPH is set to No)
Select Yes to prioritize the TPL requests that will allow the "hints" to be sent to help facilitate
and optimize the processing of certain transactions in the system memory. The options are
Enable and Disable.
Relaxed Ordering
Select Enable to allow certain transactions to be processed and completed before other
transactions that have already been enqueued. The options are Disable and Enable.
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Chapter 4: UEFI BIOS