User`s manual

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BIOS Setup
Manual If you want your system to run at a performance
better than the one “by SPD”, select “Manual” then
select the best option in the “CAS Latency Time”
to “DRAM RAS# Precharge” fields.
CAS Latency Time
This field is used to select the local memory clock periods.
Active to Precharge Delay
The options are 5, 6, 7 and 8.
DRAM RAS# to CAS# Delay
The options are 2, 3 and 4.
DRAM RAS# Precharge
This field controls RAS# precharge (in local memory clocks).
DRAM Data Integrity Mode
The ECC (Error Checking and Correction) function is supported only
in x72 (72-bit) PC SDRAM DIMMs. If you are using x64 (64-bit) PC
SDRAM DIMMs, set this field to Non-ECC.
Non-ECC Uses x64 PC SDRAM DIMM.
ECC This option allows the system to recover from memory
failure. It detects single-bit and multiple-bit errors, then
automatically corrects single-bit error.
Memory Frequency For
This field is used to select the memory clock speed of the DIMM.