Hi Sean,
It would be really great if Revit could use GPU cores (cuda technology, etc.) with its Mental Ray rendering platform.
Currently I don't think Revit uses the GPU at all when rendering and relies on CPU cores and RAM when processing
and calculating during the render.
GPU rendering really seems to be taking over the CG world--ala TwinMotion, Lumion, I-Ray, etc.
We would use Revit to render much more if it could use GPU and reduce frame times from 1-10 minutes down to
seconds or less. Now, we export via FBX and bring into 3dsMaxDesign to do hi-end renderings and animations.
We'd rather stay in Revit if possible.
cheers!