@schmidt_fu Yeah, but CPUs are faster these days :D These aren't very big though, they're 1500px square. You can also do GPU rendering on some, and CUDA, which speeds them up significantly.
I'm about to render a 4k one and it'll take significantly longer, I'll time it :D

@welshpixie These are lovely!
Also incredible to think that back in the ’80s people were using SIMD parallel supercomputers to do this sort of thing (if I remember correctly)