Can the M1 handle multiple Thunderbolt 3 devices?

[Hessel89]

I am considering an M1 Mac Mini but I wonder if it can handle 3 Thunderbolt Devices.

Rightnow I'm actively using 3 Thunderbolt devices at the same time.

LG Ultrafine 5K display,
OWC 4M2 (M.2 enclosure)
Presonus Quantum2626 (audio interface)

The Quantum2626 works is daisychained to the 4M2 so effectively I only need two Thunderbolt 3 ports on my Mac.

What's not entirely clear is wether the M1 has 1 or 2 Thunderbolt chips. I can imagine that a 5K 60hz stream, which takes up 32Gbps already, + 2 other TB3 devices will fill up the bandwidth quite fast if it only has 1 chip..

Anyone using their M1 Mac with so much TB bandwidth here?

 

[joevt]

The M1 Macs have two Thunderbolt buses. One for each port, so the ports don't share bandwidth. The Thunderbolt controllers are integrated into the M1 CPU so they aren't really connected by PCIe.

You should be able to connect up to 10 or 12 Thunderbolt devices.

The Presonus is probably the lowest bandwidth device. Check the link width and link rate of the PCIe device to see the max possible bandwidth - it will use less than that. If it's 8 or 4 Gbps, then you might want to use the Presonus with the same port that you connect the LG to but neither the Presonus nor the LG have a downstream Thunderbolt port so you would need something like the OWC Thunderbolt 4 Hub to connect both devices to the same port.

Without the Thunderbolt Hub, you would have to connect the devices as you already do.