[matt4077]

Officially, there shouldn't be very many people for whom it's relevant. The last Macs with Nvidia GPUs were sold around 2011 if I remember correctly.

Unofficially, there may be some people using Hackitoshs with rather beefy GPUs for machine learning.

There's a lot you can do easily on a $500 GPU that should take too long on CPU. And I prefer the shorter write/run/debug loop of working locally. It's the same niche other machine learning workstations fill, only with the preferred desktop OS.

There will also be external GPUs for Macs soon(ish), and those would be perfect for tensorflow. I'm not sure at that point they'll want it running on Macs again, and discontinuing support now may be the wrong decision.

[swang]

My late 2013 MBP has a Nvidia 750M

[tomjakubowski]

Doing a little binary search on Everymac, it seems that the last new MBP model with Nvidia graphics was mid-2014. Both offerings with discrete graphics from mid-2015 had AMD cards. I'm also fairly sure you could still buy those mid-2014 MBPs well into 2015; I distinctly remember seeing both AMD and Nvidia MBPs available in the online store around that time.

http://www.everymac.com/systems/apple/macbook_pro/specs/macb...