Best GPU for Rhino

I’m sure it’s been discussed, but I can’t find very much about it…
I have access to both high-end Mac and Windows machines as well as GPU. Can use Titan X, Tesla K80, and Nvidia 980Ti’s.

Need to deal with complex models and animate (hopefully coming to Mac soon).

How much does Rhino5 rely on GPU? Can I specify the GPU that it will use? (since, for example, Tesla is computer only, not a video out).

Thanks for any tips/logic about this.

The System Requirements page recommends AMD or nVidia:

Any recomendation more specific than that will need to come from another user that has done some comparison testing.