FPU is needed too, I think. What expansion it needs for A600... accelerator maybe.
Real 3D was a great program. It always felt so much more advanced and modern than polygon based modelers/renderers which the others pretty much were.
When I bought my first A1200 as a new, I just had to get memory expansion with FPU with it just to be able to use Vista Pro and Real 3D. Friend had an A3000 which still was faster than my lousy 020, but I was able to do something still... and with AGA I even got more colorful images displayed