User Manual

ROG Z790 Series (Intel
®
14
th
) BIOS Manual
71
The following item appears only when VT-d is set to [Enabled].
Control Iommu Pre-boot Behavior
Allows you to enable IOMMU in Pre-boot environment (if DMAR table is installed in DXE and
if VTD_INFO_PPI is installed in PEI).
Configuration options: [Disable IOMMU] [Enable IOMMU during boot]
Memory Configuration
The items in this submenu allow you to set memory configuration parameters.
Memory Remap
Allows you to enable or disable memory remap above 4GB.
Configuration options: [Enabled] [Disabled]
Graphics Configuration
The items in this submenu allow you to select a primary display from CPU Graphics, PEG
Graphics devices, or PCIe Graphics devices.
Primary Display
Allows you to select the primary display from CPU Graphics / PEG Graphics / PCIe
Graphics device.
Configuration options: [Auto] [CPU Graphics] [PEG Slot] [PCIE]
iGPU Multi-Monitor
Set this item to [Enabled] to empower both integrated and discrete graphics for multi-
monitor output. iGPU shared system memory size will be fixed at 64M.
Configuration options: [Disabled] [Enabled]
DVMT Pre-Allocated
Allows you to select the DVMT 5.0 Pre-Allocated (Fixed) Graphics Memory size used
by the Internal Graphics Device.
Configuration options: [32M] [64M] [96M] [128M] [160M] [192M] [224M] [256M] [288M]
[320M] [352M] [384M] [416M] [448M] [480M] [512M]
RC6(Render Standby)
Allows you to enable render standby support.
Configuration options: [Disabled] [Enabled]
VMD setup menu
The items in this submenu allow you to set the VMD configuration settings.
Enable VMD controller
Allows you to enable or disable the VMD controller.
Configuration options: [Disabled] [Enabled]
Setting the Enable VMD controller to [Disabled] may result in data loss.