It’s easier to have a localised machine to get my work 60% of the way, and then send it to a larger rack based machine if needed.
Lot’s of software can run over the multiple CPU’s or utilise the full thread count, mainly CAD and visualisation stuff. It mainly handy for running multiple software or multiple instances of the same software. Yes, you need custom software in almost all cases but thats not as much work as I first thought and companies will specialise in supporting you through those processes.
Keyshot, Deltagen and Catia can leverage this out the box almost, a lot of software providers will complete custom work for you so that it’s supported (but its not an advertised service in a lot of cases, so I wont mention any more just in case).
A lot of custom animation software (or to be more accurate, custom plugins for well known animation software).
Original assets are also generally very big CAD files, a full vehicle assembly will be in the GB’s and thats when it’s in curves. Once you convert anything to polygons you can times the original size by (a lot!).
So the TLDR is:
-Having a computer able to run multiple tasks/jobs at the same time
-The benefit of having a small localised machine rather than a rack system
-Powerful enough to work with complete vehicle CAD files once converted to polygons