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IOAT Configuration
Enable I/OAT
Select Enable to enable Intel I/OAT (I/O Acceleration Technology), which signifi-
cantly reduces CPU overhead by leveraging CPU architectural improvements
and freeing the system resources for other tasks. The options are Enable and
Disable.
No Snoop
Select Enable to support no-snoop mode for each caching agent. The options
are Disable and Enable.
Relaxed Ordering
Select Enable to enable Relaxed Ordering support which will allow certain trans-
actions to violate the strict-ordering rules of PCI and to be completed prior to
other transactions that have already been enqueued. The options are Disable
and Enable.
Intel VT for Directed I/O (VT-d)
Intel VT for Direct 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) Configuration
The following QPI information will be displayed:
•
Number of CPU
•
Number of IIO
•
Current QPI Link Speed: This item displays the current QPI Link speed.
4-15
Chapter 4: AMI BIOS
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