CoolTechZone has posted an article on DDR Memory Bandwidth

With all things equal, a stick of DDR memory capable of running 2-2-2-5 memory timings will make the computer operating experience seem faster than a DIMM which can only run at 3-4-4-8. This is because of the fact that when the memory receives an instruction, retrieves the data, and sends it back out in less time.

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