Asus AP140R-E1 - Manual (Page 71)

ASUS AP140R-E1 1U barebone server 5-15
The items CAS Latency Time, Active to Precharge Delay, DRAM RAS#
to CAS# Delay, and DRAM RAS# Precharge are configurable only
when the Memory Timing Selectable item is set to [Manual].
DRAM Frequency [Auto]
Allows you to select the DRAM operating frequency.
Configuration options (for CPUs with 533MHz FSB) :
[DDR266] [DDR333] [Auto]
Configuration options (for CPUs with 800MHz FSB) :
[DDR266] [DDR333] [DDR400] [Auto]
Memory Timing Selectable [By SPD]
The DRAM clock are set according to the DRAM SPD (Serial Presence
Detect). Select [By SPD] for automatic DRAM clock detection. Select
[Manual] to allow setting the succeeding memory items to optimal timings.
Configuration options: [Manual] [By SPD]
CAS Latency Time [2.5]
This item sets the latency (in clocks) between the DRAM read command
and the time the data actually becomes available. Configuration options:
[2] [2.5] [3]
Active to Precharge Delay [7]
This item controls the number of DRAM clocks used for DRAM
parameters. Configuration options: [8] [7] [6] [5]
DRAM RAS# to CAS# Delay [3]
Controls the latency between the DRAM active command and the read/
write command. Configuration options: [4] [3] [2]
DRAM RAS# Precharge [3]
This item controls the idle clocks after issuing a precharge command to
the DDR SDRAM. Configuration options: [4] [3] [2]
Memory Parity Check [Enabled]
Allows memory parity checking option. This item shows Enabled if you
installed ECC DDR DIMMs, and shows Disabled if you installed non-ECC
DDR DIMMs.