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2 chipset, Northbridge configuration, Mtrr mapping [continuous – Asus KFN5-Q/SAS User Manual

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ASUS KFN5-Q Series

4-15

4.4.2 Chipset

The Chipset menu allows you to change the advanced chipset settings.

Select an item then press to display the sub-menu.

Options for NB.

NorthBridge Configuration

SouthBridge/MCP55 Configuration

PCI Express Configuration

Smbios Configuration

Advanced Chipset Settings

WARNING: Setting wrong values in below sections

may cause system to malfunction.

NorthBridge Configuration

The NorthBridge Configuration menu allows you to change the Northbridge

settings.

MTRR Mapping [Continuous]

Sets the method used for programming CPU MTRRs when 4GB or more

memory is installed on the system. When set to Discrete, the BIOS leaves

the PCI hole below the 4GB boundary undescribed. Set to Continuous to

describe the PCI hole as non-cacheable.

Configuration options: [Continuous] [Discrete]

PowerNow [Disabled]

Enables or disables generation of the ACPI_PPC, _PSS, and _PCT objects.

Configuration options: [Disabled] [Enabled]

NorthBridge Chipset Configuration
Memory Configuration

ECC Configuration

IOMMU Option Menu

Power Down Control

[Auto]

Alternate VID

[Auto]

Memory CLK : 333 MHz

CAS Latency (Tcl) : 5.0

RAS/CAS Delay (Trcd) : 5 CLK

Min Active RAS (Tras) : 15 CLK

Row Precharge Time (Trp) : 5 CLK

RAS/RAS Delay (Trrd) : 3 CLK

Row Cycle (Trc) : 21 CLK

Read to Precharge Time (Trpt) : 2 CLK

Write Recovery Time (Twrt) : 5 CLK

Read Command Delay (Twtr) : 3 CLK

Asynchronous Latency : 6 ns