My concerns actually lied with the amount of RAM available. 1GB (less what the system needs) is not really enough for editing 3D things beyond the simple stuff.
Never really noticed Gentoo64 running out of memory when looking at Tim's starship model in b4a, about 10% usage.
Some tricks people have tried is zram, ie compression turns 1GB into about 1.5GB?
Eric's OpenGL driver only needs min 16MB and assigns more as needed.
I had a real reason to go to Gentoo64, more registers and faster access to the NEON, which I think happens when GCC 7.3 compiles b4a on Aarch64. Can it be tweaked even more?
Mesa3d libs/examples compile fine on Gentoo64, more deps needed in Raspbian.
Have not got around to bench marking the mesa3d code.
How far can a Pi be pushed for 3D modeling, no idea, this is all new to me.
To do Tim's texture baking with fog and lighting probably going to something bigger than a Pi?
But Tim has proved displaying it on a Pi even a Zero is not a problem.
Simple 3D modeling yes, making a Blender movie? Who knows, let's find out
A Pi Blender render farm? A stack of Pi3B+ could do it?
If one Pi can only render at 1fps, 24 Pi's will make it real time?
1GB is not a small amount of memory, if used well
I'm dancing on Rainbows.
Raspberries are not Apples or Oranges