Owners Manual

Option Description

I/O Snoop

Holdoff

Response

Selects the number of cycles PCI I/O can withhold snoop requests from the CPU, to allow time to

complete its own write to LLC. This setting can help improve performance on workloads where

throughput and latency are critical.

Embedded Video

Controller

Enables or disables the Embedded Video Controller option. This option is set to Enabled by default.

Current State of

Embedded Video

Controller

Displays the current state of the embedded video controller. The Current State of Embedded Video

Controller option is a read-only field. If the Embedded Video Controller is the only display capability in the

system (that is, no add-in graphics card is installed), then the Embedded Video Controller is automatically

used as the primary display even if the Embedded Video Controller setting is set to Disabled.

SR-IOV Global

Enable

Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option

is set to Disabled by default.

OS Watchdog

Timer

If your system stops responding, this watchdog timer aids in the recovery of your operating system. When

this option is set to Enabled, the operating system initializes the timer. When this option is set to

Disabled (the default), the timer does not have any effect on the system.

Memory Mapped

I/O above 4 GB

Enables or disables the support for PCIe devices that need large amounts of memory. This option is set to

Enabled by default.

Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement feature controls the

configuration of PCIe cards installed in the specified slot. Slots must be disabled only when the installed

peripheral card prevents booting into the operating system or causes delays in system startup. If the slot

is disabled, both the Option ROM and UEFI drivers are disabled.

Slot Bifurcation Enables you to control the bifurcation of the specified slot. Only slots that are present in your system are

available for control.

The configuration for a x16 slot is default (x16), x8x8, or x4x4x4x4.

The configuration for a x8 slot is default (x8) or x4x4.

Slots Description

Slot 1 Bifurcation