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
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