Both are reliable, decent brands. Samsung tend to be cheaper, and come without thermal spreaders and corsair tends to be a bit more expensive and have thermal spreaders. The heat reducing value of thermal spreaders is questionable, but non-the less I like them because they look cool
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Either way both have lifetime warranties (don't remove the tags) so I'd get the module that is CAS 2.0 for best performance. If both are and the extra $25 won't kill you get the corsair, but if money is tight you won't have any troubles with sammy.
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