Hi simri,
My situation is also a bit weird. I have a pair of CM3X1024-1800C7D v3.1.
The factory programmed SPD of one module reads on CPU-Z as to be CM3X1024-1800C7DHX (I do not know if it was supposed to be 1800C7D; I mean non XMP).
The most weird thing is, other module appears to be a...