Does using a matched pair of memory sticks provide any benefit?
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Where this expectation breaks down is with overclocking. As noted earlier, manufacturers only warrant their products to run at their rated speeds/timings, and if someone chooses to run the product outside those specifications, all bets are off.
The only real advantage I was able to find to buying RAM in matched pairs was that it can be slightly cheaper than buying the same sticks separately. For example, at the time of writing, a matched pair of the 1600C9 sticks shown above is $15 cheaper than two of the single sticks, and a matched pair of the 1600C10 sticks is $10 cheaper.
http://skeptics.stackexchange.com/quest ... ny-benefit