If I was speccing a 3d workstation and software, and my primary concern is how fast an IPR or interactive render view works, rather than how long a final render might take, what hardware is best?
Using a CPU renderer like Arnold or Corona, do you get a faster IPR by having a high single core processor speed, or a high multicore speed? I know having a threadripper for example will speed up final renders, but does it affect the IPR?
Using a GPU renderer like Octane or Redshift, do you get a faster IPR by having multiple cards, or is it the speed of the primary card that counts? I know Octane and Redshift scale linearly for final rendering by adding graphics cards, but will the IPR also speed up?
And overall, once you make the best IPR hardware choices, which renderer, CPU or GPU or hybrid, gives the fastest IPR experience?