User Manual

ROG CROSSHAIR X670E Series BIOS Manual
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6.12 NB Configuration
The items in this menu allow you to change the NB Configurations.
Primary Video Device
Allows you to select Primary Video Device BIOS will use for output.
Configuration options: [IGFX Video] [PCIE Video]
UMA Frame Buffer Size
Allows you to set the UMA FB Size.
Configuration options: [Auto] [64M] [80M] [96M] [128M] [256M] [384M] [512M] [768M] [1G]
[2G] [3G] [4G] [8G]
6.13 AMD CBS
The items in this menu shows the AMD Common BIOS Specifications.
Global C-state Control
Allows you to control IO based C-state generation and DF C-states.
Configuration options: [Disabled] [Enabled] [Auto]
IOMMU
Configuration options: [Disabled] [Enabled] [Auto]