> I am frustrated that I cannot perceive any performance improvements in > CPUs since the 4th Gen i7s. This is likely due to the software I use > does not gain any perceptible improvement from running on > a faster CPU?
Not really, it's simply that, since the end of [Dennard scaling](https://en.wikipedia.org/wiki/Dennard_scaling) around 2007, we don't know how to make CPUs faster, really. Progress is *very* slow. That's why the number of cores has gone up, since we still know how to do that. Sadly, for many tasks, additional cores make no difference. Stefan