ASROCK Super Alloy H110M-HDV User Manual page 43

DRAM Frequency OC Preset
If the DRAM frequency is selected, the corresponding DRAM and BCLK frequency for
overclocking will be set.
Primary Timing
CAS# Latency (tCL)
The time between sending a column address to the memory and the beginning of the data
in response.
RAS# to CAS# Delay and Row Precharge (tRCDtRP) O
RAS# to CAS# Delay : The number of clock cycles required between the opening of
a row of memory and accessing columns within it.
Row Precharge: The number of clock cycles required between the issuing of the
precharge command and opening the next row.
RAS# Active Time (tRAS)
The number of clock cycles required between a bank active command and issuing the
precharge command.
Command Rate (CR)
The delay between when a memory chip is selected and when the first active command can
be issued.
Secondary Timing
Write Recovery Time (tWR)
The amount of delay that must elapse after the completion of a valid write operation,
before an active bank can be precharged.
Refresh Cycle Time (tRFC)
The number of clocks from a Refresh command until the first Activate command to
the same rank.
RAS to RAS Delay (tRRD_L)
The number of clocks between two rows activated in different banks of the same
rank.
RAS to RAS Delay (tRRD_S)
The number of clocks between two rows activated in different banks of the same
rank.
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