eGPU via Cubix PCIe Expansion Chassis?

Grumply · Aug 11, 2020

Hi guys,

I’m wondering if anyone knows whether it’s possible to connect a PCIe Expansion Chassis (like the Cubix Xpander) to an iMac using a Thunderbolt 3 x16 eGPU box?

Will the iMac be able to detect and work with all of the peripherals through the single TB3 connection?

Obviously bandwidth is going to be a concern. But if the communication does work between them, would stuffing multiple GPUs into the Cubix potentially be viable for additional computing power?

joevt · Aug 11, 2020

Thunderbolt enclosures with multiple slots like the Sonnet Echo Express III-D (Thunderbolt 3 Edition) or the Sonnet Echo Express IIIe are basically the same thing as a Thunderbolt enclosure with a single slot (like an eGPU box or the Sonnet Echo Express SE I (Thunderbolt 3 Editition)) connected to a Cubix.

Multiple GPUs connected to a single Thunderbolt device or Thunderbolt port should work: