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X399 x16 to x8/x8 bifurcation


#1

Essentially most x399 boards come with:

x16
x8
x16
x8

and 3x x4 (m2 or u2)

slot layout.

I’m looking for SIX x8 pci-e slots.

So I need both x16 slots splitted/bifurcated into x8/x8.

Giving me:

x8/x8
x8
x8/x8
x8

Very big problem seems to be to find good x16 splitter for x8/x8 supporting pci-e 3.0 of course.


#2

It seems the x399 Taichi has support for both x16 slots to be bifurcated to x8/x8 each.

Also found a great shop for risers:
https://peine-braun.net/shop/index.php?route=product/category&path=65_59


#3

Where are you getting the information that the x399 Taichi supports x8x8 mode on the x16 slot?

When I look in the bios I only see an option for x4x4x4x4 mode. I’m running bios version 3.30.

Have you tried the splitter? I’m looking to use my system in a similar configuration so I can support more GPU’s for rendering.