Supermicro SuperServer 2028R-TXR, User Manual, Page: 105 / 140

Chapter 7: BIOS
7-13

Intel VT for Directed I/O (VT-d)
Intel
®
VT for Directed I/O (VT-d)
Select Enable to use Intel Virtualization Technology support for Direct I/O VT-d
support by reporting the I/O device assignments to the VMM (Virtual Machine
Monitor) through the DMAR ACPI Tables. This feature offers fully-protected I/O
resource sharing across Intel platforms, providing greater reliability, security and
availability in networking and data-sharing. The options are Enable and Disable.
Interrupt Remapping
Select Enable for Interrupt Remapping support to enhance system performance.
The options are Enable and Disable.

QPI (Quick Path Interconnect) Confi guration
QPI Status
The following information will display:
•
Number of CPU
•
Number of IIO
•
Current QPI Link Speed
•
Current QPI Link Frequency
•
QPI Global MMIO Low Base/Limit
•
QPI Global MMIO High Base/Limit
•
QPI PCIe Confi guration Base/Size
Link Frequency Select
Use this feature to select the desired QPI link frequency. The options are 6.4
GT/s, 8.0 GT/s, 9.6 GT/s, Auto , and Auto Limited.
Link L0p Enable
Select Enable for the QPI to enter the L0p state for power saving. The options
are Disable and Enable .
Link L1 Enable
Select Enable for the QPI to enter the L1 state for power saving. The options
are Disable and Enable .