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North bridge configuration, 5 chipset, Dram frequency [auto – Asus P5B-VM DO User Manual

Page 78: Configure dram timing by spd [enabled

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Chapter 2: BIOS setup

2.4.5

Chipset

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

item then press to display the sub-menu.

Advanced Chipset Settings

WARNING: Setting wrong values in below sections

may cause the system to malfunction.

NorthBridge Configuration

vPro Technology Configuration

Memory Remap Feature [Enabled]

Allows you to enable or disable the remapping of the overlapped PCI memory

above the total physical memory. Enable this option only when you install 64-bit

operating system. Configuration options: [Disabled] [Enabled]

DRAM Frequency [Auto]

Allows you to set the DDR operating frequency.

Configuration options: [Auto] [533MHz] [667MHz] [800MHz] [1067MHz]

Configure DRAM Timing by SPD [Enabled]

When this item is enabled, the DRAM timing parameters are set according to the

DRAM SPD (Serial Presence Detect). When disabled, you can manually set the

DRAM timing parameters through the DRAM sub-items. The following sub-items

appear when this item is set to [Disabled].

Configuration options: [Enabled] [Disabled]

DRAM CAS# Latency [5]

Controls the latency between the SDRAM read command and the time the

data actually becomes available. Configuration options: [3] [4] [5] [6]

Configure North Bridge

features.

North Bridge Configuration

North Bridge Chipset Configuration

Memory Remap Feature

[Enabled]

PCI MMIO Allocation: 4GB To 3584MB

DRAM Frequency

[Auto]

Configure DRAM Timing by SPD [Enabled]

Memory Hole

[Disabled]

Initiate Graphic Adapter

[PEG/PCI]

Internal Graphic Mode Select [Enabled, 8MB]

Video Function Configuration

ENABLED: Allow

remapping of

overlapped PCI memory

above the total

physical memory.

DISABLED: Do not allow

remapping of memory