@kornel "A processor designed purely for speed, not for a compromise between speed and C support, would likely support large numbers of threads, have wide vector units, and have a much simpler memory model. Running C code on such a system would be problematic, so, given the large amount of legacy C code in the world, it would not likely be a commercial success."
— https://cacm.acm.org/practice/c-is-not-a-low-level-language/
I wonder what a Lisp machine using current technology would be like? Designed from the ground up for Lisp