iMac 2019 Titan Ridge TB3?

[JacobHarvey]

Does anyone know of a way to determine the exact TB3 controller model used in the 2019 iMac (e.g. through the terminal)?

I'd just like to check that the 2019 iMac is using the newest Titan Ridge TB3 controller (which may possibly support DisplayPort 1.4 in the future) rather than the old Alpine Ridge controller used in the 2017 iMac

 

[PaulD-UK]

Perhaps someone can interpret this posting - which lists both Alpine Ridge and Titan Ridge controllers?
From: https://www.reddit.com/r/VFIO/comments/bzlsje/the_2019_imac_actually_support_iommu/
Quote:
iMac19,1 (i9-9900k)

IOMMU Group 15: 05:00.0 PCI bridge [0604]: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] [8086:1578] (rev 06)
IOMMU Group 16: 06:00.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
IOMMU Group 17: 06:01.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
IOMMU Group 18: 06:02.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
IOMMU Group 19: 06:04.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
/Quote.

 

[priitv8]

Strangely, in IORegistryExplorer, I can only find the 8086:15ea device:

 

[JacobHarvey]

Looks like it has Titan Ridge, but it is weird that the reddit poster found references to Alpine Ridge as well

 

[priitv8]

Looks like it has Titan Ridge, but it is weird that the reddit poster found references to Alpine Ridge as well

He also finds strange references to Xeon:

IOMMU Group 0:
    00:00.0 Host bridge [0600]: Intel Corporation 8th Gen Core 8-core Desktop Processor Host Bridge/DRAM Registers [Coffee Lake S] [8086:3e30] (rev 0a)
IOMMU Group 1:
    00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) [8086:1901] (rev 0a)

 

[joevt]

So can the iMac 2019 output HBR3 link rate since it's using Titan Ridge and has a Radeon Pro 580X?