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Using the BIOS Setup Program
67
Table 23. Chipset Configuration Submenu (continued)
Feature Options Description
Extended Configuration
•
Default (default)
•
User Defined
Chooses the default or user defined settings for
the extended configuration options.
Graphics Core Frequency
•
Auto (default)
•
266 MHz
•
333-320 MHz
Allows override of detected graphics core
frequency value.
SDRAM Frequency
•
Auto (default)
•
266 MHz
•
333 MHz
•
400 MHz
Allows override of detected memory frequency
value.
SDRAM Timing Control
•
Auto (default)
•
Manual – Aggressive
•
Manual – User Defined
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.
CPC Override
• Auto (default)
• Enabled
• Disabled
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.
• 8 (default)
• 7
• 6
• 5
Selects length of time from read to pre-change.
Corresponds to tRAS, min.
SDRAM CAS# Latency
• 2.0
• 2.5
• 3.0 (default)
Selects the number of clock cycles required to
address a column in memory. Corresponds
to CL.
SDRAM RAS# to CAS#
delay
• 4
• 3 (default)
• 2
Selects the number of clock cycles between
addressing a row and addressing a column.
Corresponds to tRCD.
SDRAM RAS# Precharge
• 4
• 3 (default)
• 2
Selects the length of time required before
accessing a new row.