I am a Mac user for many years. For some days thinking to switch for Windows machine. Working as an interior designer, I need fast rendering to get job done in minutes not in hours. Nowadays this is possible. Thank you to GPU acceleration technology which Arnold render has. Unfortunately the new Mac Pro is not coming with Nvidia cards and Arnold is not supporting AMD GPUs.
So, what do you think? Should I switch to Windows machine with two RTX 2080 Ti or wait till Arnold will develop something cool for AMD GPUs? Or maybe I need to buy some other Mac machines and to build my own server for rendering?
Need to get things done in minutes, not hours, does not blend very well with Arnold on AMD GPUs, in fact, its not even a thing and possibly wont be ever.
You are much better off with getting a machine with nvidia cards, as that means you can start to render right away.