Originally Posted By: K447
The larger MacBook Pro with Thunderbolt 3 have two chips, one feeds the left side, one feeds the right side.


Aha, that explains it. Yeah, I've got a 15" Macbook Pro.

Blast, though, it means that, no matter what, I'm using two cables, and they have to be inconveniently placed on two sides of the Mac instead of one.

Maybe a docking station with an external GPU is in my future, if such a thing is being made some day.

Quote:
I seem to recall the left side ports have more bandwidth? Need to check that!


According to this, that limitation is on the 13 but not the 15 if I'm reading it right:
https://www.macrumors.com/2016/10/28/macbook-pro-tb3-reduced-pci-express-bandwidth/
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Tony Fabris