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4.4.1 Chip Configuration
SDRAM Configuration [By SPD]
This parameter allows you to set the optimal timings for items 2–5,
depending on the memory modules that you are using. The default setting
is [By SPD], which configures items 2–5 by reading the contents in the
SPD (Serial Presence Detect) device. The EEPROM on the memory
module stores critical information about the module, such as memory type,
size, speed, voltage interface, and module banks.
Configuration options: [User Defined] [By SPD]
NOTE!
The following 4 SDRAM parameters appear only when you set
the SDRAM Configuration to [User Defined].
SDRAM CAS Latency [2.5T]
This item controls the latency between the SDRAM read command and the
time the data actually becomes available.
SDRAM RAS to CAS Delay [3T]
This item controls the latency between the SDRAM active command and the
read/write command.
SDRAM RAS Precharge Time [3T]
This item controls the idle clocks after issuing a precharge command to the
SDRAM.
SDRAM RAS Active Time [6T]
This item controls the number of SDRAM clocks used for SDRAM parameters.
ASUS P4S533-E motherboard user guide
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