Single CPUs don't, but the number of cores does grow. GPUs are also worth considering here. What does not get faster is programs written for old architectures.

Single CPUs don't, but the number of cores does grow. GPUs are also worth considering here. What does not get faster is programs written for old architectures. 20 years ago the best way to optimize a program was waiting a decade. That won't work today, and to make programs future-proof they have to scale to a lot of threads.