X399 Motherboards with Bifurcation support?

[royalba94]

So in all my googling these past couple hours I cannot seem to find out which X399 motherboards support PCIe Bifurcation, can anybody recommend?

Boards I have to choose from at the moment are:

• MSI X399 Carbon
• Asrock X399 Taichi
• Gigabyte X399 Gaming 7

Would love any help in choosing which motherboard I should go with or if another would suit me better.

Thanks!

P.S. Also I’m not sure which has decent IOMMU groups for passing stuff through to VMs and whatnot as I’m likely going to start dabbling in that in the near future but IDK if anyone has recommendations for that.

 

[Damascus]

AFAIK asrock loves supporting all the random knickknacks like bifurcation, I'd grab the taichi.

 

[royalba94]

Thanks, that's what I ended up going with

I couldn't confirm the bifurcation options other than the x16 to 4 x4 with the quad M.2 adapter so we'll see - I'm hoping for an 2 x8 option.
Will post here with what I end up figuring out in case other people have the same questions.

Now I've just got to order a x399 waterblock and finalize the overall system plan so I can be sure I've got everything for phase 1