Moore's law is about transistor density and has not ended. See the performance ramp of recent model GPUs. Amdahl basically does not apply to graphics tasks whi

Moore's law is about transistor density and has not ended. See the performance ramp of recent model GPUs. Amdahl basically does not apply to graphics tasks which are embarrassingly parallel. Raytracing will be no different. And in fact you're getting rid of many preparation steps pre render that may be tricky to parallelize well, and replacing it with brute force.