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“Memory itself is organized in a spreadsheet, made up of Rows and Columns. Two basic signals are sent to the RAM in order for it to read/write data, address and control. The address is of course where the data is located on the memory banks, and the control signals are various commands needed to read or write. There is a delay before a control signal can be executed or finish and this is where we get latencies. The standard format for memory latencies are most often expressed as a string of four numbers, separated by dashes, from left to right or vice-versa like this 2-2-2-6 [CAS-tRP-tRCD-tRAS] . These values represent how many clock cycles long each delay is but are not expressed in the order in which they occur. Different bioses will display them differently and there maybe additional options (timings) available.”
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