I distinctly remember when AMD and Intel were racing to 1GHz (yes, I’m old), and in the years to follow, they both continued to push for higher clocks. The focus would later shift to things like multi-core designs, better branch prediction, and more recently piling on as much cache as possible, but chasing higher clocks hasn’t been completely

Source: Hot Hardware – Intel Core i9-13900K Raptor Lake CPU Might Turbo To 5.8GHz And Flex 68MB Of Game Cache