Chapter 4: AMI BIOS
4-13
CPU SLOT6 PCI-E 3.0 X8 (IN X16)
This item congures the PCI-E port Bifuraction setting for a PCI-E port specied
by the user. The options are Gen 1 (2.5GT/s), Gen 2 (5 GT/s), and Gen 3 (8GT/s).
CPU SLOT7 PCI-E 3.0 X8
This item congures the PCI-E port Bifuraction setting for a PCI-E port specied
by the user. The options are Gen 1 (2.5GT/s), Gen 2 (5 GT/s), and Gen 3 (8GT/s).
IOAT Conguration
Enable I/OAT
Select Enable to enable Intel I/OAT (I/O Acceleration Technology), which signi-
cantly reduces CPU overhead by leveraging CPU architectural improvements
and freeing the system resource for other tasks. The options are Enable and
Disable.
No Snoop
Select Enable to support no-snoop mode for each CB device. 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 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.
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