Advanced Chipset Features - MSI 845 Pro Manual

Chapter 3

Advanced Chipset Features

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******** DRAM Timing *****
Configure SDRAM Timing by
CAS# Latency
RAS# Precharge
RAS# to CAS# Delay
Precharge Delay
DRAM Integrity Mode
AGP Aperture Size
Delayed Transaction
Note: Change these settings only if you are familiar with the chipset.
Configure SDRAM Timing by
Selects whether DRAM timing is controlled by the SPD (Serial Presence
Detect) EEPROM on the DRAM module. Setting to SPD enables CAS#
Latency, RAS# Precharge, RAS# to CAS# Delay and Precharge Delay
automatically to be determined by BIOS based on the configurations on the
SPD. Selecting Manual allows users to configure these fields manually.
CAS# Latency
This controls the timing delay (in clock cycles) before SDRAM starts a read
command after receiving it. Settings are 3 Clocks and 2 Clocks. 2 Clocks
increases the system performance while 3 Clocks provides more stable
performance.
RAS# Precharge
This item controls the number of cycles for Row Address Strobe (RAS) to be
AMIBIOS SETUP - CHIPSET FEATURES SETUP
:SPD
:3 Clocks
:3 Clocks
:3 Clocks
:7 Clocks
:Non-ECC
:64MB
:Enabled
ESC : Quit
F1 : Help
F5 : Load Previous Values
F6 : Load Fail-Safe Defaults
F7 : Load Optimized Defaults
3-12
↑↓←→ : Select Item
PU/PD/+/- : Modify