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BIOS Setup
RAS# to CAS# Delay (Trcd)
When DRAM refreshes, both rows and columns are addressed
separately. This field is used to select the delay time from RAS (Row
Address Strobe) to CAS (Column Address Strobe) when reading
and writing to the same bank. The lesser the clock cycle, the faster
the DRAM’s performance.
Row Precharge Time (Trp)
This field is used to select the number of cycles that is allowed for
Row Address Strobe (RAS) to precharge. If insufficient time is al-
lowed for the RAS to accumulate its charge before DRAM refreshes,
refreshing may be incomplete and DRAM may fail to retain data.
Row to Row Delay (Trrd)
This field is used to select the row to row delay time of different
banks.
Row Cycle Time (Trc)
This field is used to select the row cycle time, RAS# active or auto
refresh of the same bank.
Row Refresh Cyc Time (Trfc)
This field is used to select the row refresh cycle time. Auto refresh
active to RAS# active or RAS# to auto refresh - similar to Trc.
1T/2T Memory Timing
2T timing which provides better system stability is supported in CG
or later revisions of the AMD Athlon
TM
64 CPU. This field will not
appear if you are using a CPU whose version is older than the CG
revision.
Auto
Automatically detects the memory timing.
1T
Sets the memory timing to Performance mode. Select this
mode for better system performance.
2T
Sets the memory timing to Normal mode. Select this
mode if you encounter system instability. (default)
