Intel D865GRH manual Extended Configuration

Using the BIOS Setup Program

Table 23. Chipset Configuration Submenu (continued)

Feature	Options		Description
Extended Configuration	•	Default (default)	Chooses the default or user defined settings for
	•	User Defined	the extended configuration options.
Graphics Core Frequency	•	Auto (default)	Allows override of detected graphics core
	•	266 MHz	frequency value.
	•	333-320 MHz
SDRAM Frequency	•	Auto (default)	Allows override of detected memory frequency
	•	266 MHz	value.
	•	333 MHz
	•	400 MHz
SDRAM Timing Control	•	Auto (default)	Auto allows timings to be programmed according
	•	Manual – Aggressive	to the memory detected.
	•	Manual – User Defined	Manual – Aggressive selects the most aggressive
			user defined timings.
			Manual – User Defined allows manual override of
			detected SDRAM settings.
CPC Override	•	Auto (default)	Controls Command Per Clock/1n rule mode.
	•	Enabled	When enabled, allows DRAM controller to attempt
	•	Disabled	Chip Select assertions in two consecutive
			common clocks.
SDRAM RAS Act. To Pre.	•	8 (default)	Selects length of time from read to pre-change.
	•	7	Corresponds to tRAS, min.
	•	6
	•	5
SDRAM CAS# Latency	•	2.0	Selects the number of clock cycles required to
	•	2.5	address a column in memory. Corresponds
	•	3.0 (default)	to CL.
SDRAM RAS# to CAS#	•	4	Selects the number of clock cycles between
delay	•	3 (default)	addressing a row and addressing a column.
	•	2	Corresponds to tRCD.
SDRAM RAS# Precharge	•	4	Selects the length of time required before
	•	3 (default)	accessing a new row.
	•	2

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