User Manual
ASUS PRIME X370-A2-21
CPB Mode [Enabled]
Enables or disables the CPB (Core Performance Boost) mode. Conguration options:
[Disabled] [Enabled]
C6 Mode [Enabled]
Enables or disables C6 mode. Conguration options: [Enabled] [Disabled]
IOMMU [Disabled]
Set this item to [Enabled] to show IOMMU Mode. Conguration options: [Enabled] [Disabled]
[Auto]
Bank Interleaving [Enabled]
Enables or disables the bank memory interleaving. Conguration options: [Enabled]
[Disabled]
Channel Interleaving [Enabled]
Enables or disables the channel memory interleaving. Conguration options: [Enabled]
[Disabled]
Core Leveling Mode [Automatic mode]
Allows you to change the number of Compute Units on the system. Conguration options:
[Automatic mode] [One Compute Unit]
2.6.2 NB Conguration
NB Conguration function is not support when using an AMD Ryzen
TM
processor.
IGFX Multi-Monitor [Disabled]
Enables or disables the Internal Graphics Device Multi‑Monitor support for add‑on VGA
devices. And the memory size of Internal Graphics Device will keep memory reserved.
Conguration options: [Disabled] [Enabled]
The IGFX Multi-Monitor item must be enabled before using AMD
®
Dual Graphics
technology.
Primary Video Device [PCIE / PCI Video]
Selects the primary display device. Conguration options: [IGFX Video] [PCIE / PCI Video]
UMA Frame Buffer Size [Auto]
This item appears only when you set the Integrated Graphics item to [Auto]. Conguration
options: [Auto] [32M] [64M] [128M] [256M] [512M] [1G] [2G]
2.6.3 SATA Conguration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA Port items show Not Present if no SATA device is installed to the corresponding SATA
port.
Hyper Kit Mode [Disabled]
Disable this option for M.2 devices. Enable this option for ASUS Hyper Kit card. Conguration
options: [Disabled] [Enabled]