Asus SABERTOOTH 990FX User Manual - Page 78
IOMMU [Disabled], Initiate Graphic Adapter [PEG/PCI], Memory Configuration - linux
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3.5.2 North Bridge Configuration UEFI BIOS Utility - Advanced Mode Main Back Ai Tweaker Advanced\ North Bridge > Advanced Monitor North Bridge Configuration IOMMU Mode Disabled > Memory Configuration Initate Graphic Adapter PEG/PCI Exit Boot Tool IOMMU is support on Linux based systems to convert 32bit I/O to 64bit MMIO. IOMMU [Disabled] Configuration options: [Disabled] [64MB] Memory Configuration Bank Interleaving [Auto] Allows you to enable Memory Bank Interleaving fuction. Configuration options: [Auto] [Disabled] Channel Interleaving [Auto] Allows you to enable Memory Channel Interleaving fuction. Configuration options: [Auto] [Disabled] ECC Mode [Enabled] Allows you to enable or disable the ECC Mode. Configuration options: [Enabled] [Disabled] Power Down Enable [Disabled] Allows you to enable or disable DDR power down mode. Configuration options: [Enabled] [Disabled] Memory Hole Remapping [Enabled] Allows you to enable or disable Memory Hole Remapping fuction. Configuration options: [Enabled] [Disabled] DCT Unganged Mode [Enabled] Allows you to select unganged DRAM mode (64-bit width). [Enabled]: Ganged mode. [Disabled]: Unganged mose. Initiate Graphic Adapter [PEG/PCI] Allows you to decide which graphics controller to use as the primary boot device. Configuration options: [PCI/PEG] [PEG/PCI] Chapter 3 3-16 Chapter 3: BIOS setup