Thanks... been chasing this topic on other forums, as it is vary rare its hard to find anythign concrete.
And still looking for a good bifurcation card.
Anywho, thanks for clearing up my missunderstanding.
I have a Gigabyte X399 Designare EX board, and as of F10 bios (not the latest I admit) i only have 4x4x4x4 options. Guessing this is in reference to non x399 boards?