Are there any X570 mobos that supports 16x PCIe + 4x

Optimal use of PCIe slots on X570 ACE pcie 4 gpu in pcie 3 slot Buy ADT-Link Key M NVMe External Graphics Card Stand Bracket with x4 Riser Cable 25cm 50cm 32Gbs for ITX STX NUC VEGA64 GTX1080ti pcie slot function At 1080p, PCIe offers a 4% performance improvement over PCIe when both tested on AMD's X570 platform Despite that, our Intel system

pcie cem slot GPUs PCIe slots and still can't make them both use x16 Using GPU-Z, I found the following: - GPU-1 : supports x16 , using x4