Using the BIOS Setup Program
Table 25. Chipset Configuration Submenu (continued)
Feature
Extended Configuration
Graphics Core Frequency
SDRAM Frequency
SDRAM Timing Control
CPC Override
Options
•Default (default)
•User Defined
•Auto (default)
•266 MHz
•
•Auto (default)
•266 MHz
•333 MHz
•400 MHz
•Auto (default)
•Manual – Aggressive
•Manual – User Defined
•Auto (default)
•Enabled
•Disabled
Description
Chooses the default or user defined settings for the extended configuration options.
Allows override of detected graphics core frequency value.
Allows override of detected memory frequency value.
Auto allows timings to be programmed according to the memory detected.
Manual – Aggressive selects the most aggressive user defined timings.
Manual – User Defined allows manual override of detected SDRAM settings.
Controls Command Per Clock/1n rule mode. When enabled, allows DRAM controller to attempt Chip Select assertions in two consecutive common clocks.
SDRAM RAS Act. To Pre.
SDRAM CAS# Latency
SDRAM RAS# to CAS# delay
SDRAM RAS# Precharge
•8 (default)
•7
•6
•5
•2.0
•2.5
•3.0 (default)
•4
•3 (default)
•2
•4
•3 (default)
•2
Selects length of time from read to
Selects the number of clock cycles required to address a column in memory. Corresponds to CL.
Selects the number of clock cycles between addressing a row and addressing a column. Corresponds to tRCD.
Selects the length of time required before accessing a new row.
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