SUPER MICRO Computer H8DMT user manual SouthBridge/MCP55 Configuration Submenu

H8DMT/H8DMT-IBX/H8DMT-F/H8DMT-IBXF User’s Manual

Table 4-5. NorthBridge Configuration Submenu (Continued)

Menu Item	Description
L2 Cache BG	Allows L2 cache RAM to be corrected when idle. Options are Disabled and
Scrub	various times in nanoseconds and microseconds.
L3 Cache BG	Allows L3 cache RAM to be corrected when idle. Options are Disabled and
Scrub	various times in nanoseconds and microseconds.

DRAM Timing Configuration

Memory Clock Mode

DRAM Timing Mode

This setting specifies the memory clock mode. Options are Auto, LIMIT and

MANUAL.

This setting specifies the DRAM timing mode. Options are Auto and DCT.

IOMMU Option Menu

IOMMU Mode

Used to disable or set the GART size in systems without AGP. Options are AGP Present, DISABLED, 32 MB, 64 MB, 128 MB, 256 MB, 512 MB and 1 GB.

Table 4-6. SouthBridge/MCP55 Configuration Submenu

Menu Item	Description
CPU/LDT Spread	Enables spread spectrum for the CPU/LDT. Options are Center Spread, DOWN
Spectrum	SPREAD or DISABLED.
PCIE Spread	Allows you to Enable or DISABLE spread spectrum for PCI-Express.
Spectrum
SATA Spread	Enables spread spectrum for the SATA. Options are Enabled and DISABLED.
Spectrum
USB 1.1 Controller	Allows you to Enable or DISABLE the USB 1.1 controller.
USB 2.0 Controller	Setting to either Enable or DISABLE the USB 2.0 controller.
	Select Enabled to enable support for USB Legacy devices.Use DISABLE to
Legacy USB Support	disable Legacy support if there are no USB devices installed in the system. AUTO
	disables Legacy support if no USB devices are connected. The options are
	DISABLED, Enabled and AUTO.

	Table 4-7. Processor & Clock Options Submenu
Menu Item		Description
		This determines the method used for programming CPU MTRRs when 4 GB or
MTRR Mapping		more memory is present. The options are Continuous, which makes the PCI
		hole non-cacheable, and DISCRETE, which places the PCI hole below the 4 GB
		boundary.
Thermal Throttling		Used to ENABLE or Disable thermal to generate a power management event.
Power Now		This setting is used to ENABLE or Disable the AMD Power Now feature.
Secure Virtual		This setting is used to Enable or DISABLE SVM (Secure Virtual Machine).
Machine Mode
CPU Page		This setting is used to Enable or DISABLE the CPU Page Translation Table.
Translation Table

4-6