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[Title] Timings [Description] 
Timings refer to the latency of a given memory module. Standard memory will only list the CAS Latency (CL) timing, e.g. CL=8. Performance modules such as Ballistix list CL, tRCD, tRP and tRAS in the form of four numbers seperated by dashes, e.g. 8-8-8-24. Taken together, these four numbers represent a module's timings (like latency, the lower the number, the better the performance).
Crucial.com - Memory terms glossary
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