But one should assume when three times the same Amazon products from the same manufacturer buys within less than three weeks, that you also get three identical modules - is not always very interesting example for stable dual channel operation.
But even if you can hardly believe it may - not even two modules were physically identical!
In a Hynix chips have been built, though the other two had Kingston chips, but were different layouted and also vary. This has not as brand manufacturers, but swept like everywhere, which then makes the Kingston Label no longer compensate.