Filled polys are ok - but textured ones? Unless you have a heavy-accelerated Amiga or want to use a Coppertrick (Alien Breed 3D) then you should be able to make a cup to tea between frames
If you are using the Blitter to draw filled polys, there won't be a world of difference between A1200 and A500. The A1200 will do the math faster and maybe render slightly quicker due to the enhanced bitplane DMA fetching - but actual polygon rendering speed is the same as A500 as the blitter isn't ANY faster.
Having some fastram in the machine will help a lot for sure - as it will keep your code out of chipmem
