Motherboards IOMMU groups?

Im looking at upgrading to ryzen and i was wondering which board has the best iommu groups, ASRock X470 Taichi , MSI X470 GAMING PRO CARBON,ASUS ROG Strix X470-F. Thanks

Dunno about the MSI board, but the IOMMU grouping on the X470 Taichi is pretty perfect. Eveything(?) is in its own IOMMU group from memory (it’s been a while, but had no issues with IOMMU on mine when i was trying to use it, my issues were 2x same GPU).

Oh ok. Thanks for the info.