Quote Originally Posted by Don_Dan View Post
The manufacturer of the chips ( Micron ) and the RAM manufacturers like Corsair do separate binning of the ICs. GKX is the higher bin from Micron, but you may find GMH that performs as good or even better. And the RAM manufacturers choose the chips that are better suited for a given task, like low frequency + tight timings or high frequency + loose timings, GMH may perform better than GKX in some of the tasks. Recently, most of the chips marked as GMH performed better than GKX,which were rarely found ( at least I don't know of it), but they performed very good, often better than previous GKX, as Micron has refined it's process.
So it mostly depends on the binning process of the RAM manufacturer.
I hope I could make it a bit clearer for you, but there are some people here on XS far more knowledgeable than me about the different characteristics of GKX and GMH.
thx for the answer