Most people I know working as professional artists/designers are working with 2D assets in software like photoshop. Even the few working in print don't need crazy GPUs. I know some people who deal with video and 3d but most of them farm out to servers to do the heavy lifting. I'm not sure what you do but in my experience this is more than enough for most digital artists and designers.

I don't know if you saw this posted elsewhere in the thread but this is a pretty solid endorsement: https://www.penny-arcade.com/news/post/2016/10/26/the-surfac...