Hi.
I have 4 of these memories (2x8GB CMK16GX4M2A2666C16) in the board with the X299 chipset.
They worked as dual channej with I5 processor, now they work as a quad channel with I7-7820X.
They are not on the manufacturer's reference list (Asrock) but they work very well.
And I have 4 free RAM slots in motherboard. Can I add other ones to them? E.g. 4x8GB or 4x16GB ??
Kind regards,
Kajetan