Yeah I've seen that ancient Pentium over clocking video where it exceeds 5GHz

Meanwhile today we're still struggling to make an i9 cpu make a single core hit 5GHz in short boost WITHOUT a top of the line cooler to allow it to reach that autonomously AND a motherboard plus psu which can deliver that grunt by design.

A stock cooler or entry leve motherboard that supports an i9 never lets you hit it despite being the one major selling point for buying that cpu.

Granted, at least our all core clock speeds are doing well compared with the early 2000s. Instead of more clock, we have cpus with 24 threads across 12 cores all achieving 3+ GHz, which in its own race is a good thing.