Definitely not. These are supposed to be higher-quality bins that also ship with higher stock clock rates (both base and boost) and are rated for them.
I don't know how common this is across the whole population of PC buyers, but personally, I have for sure bought K-series parts then not clocked them past their stock settings, trusting that they are rated for it and deeply uninterested in any OCing past that. (I prefer my machines stable, thank you very much.)
Decades ago I visited a fellow Amiga user's house. He had an overclocked 68060 Apollo board.
He was so happy with the speed. Would not stop telling everyone, and talking about it. Yet as I watched him demo it, it rebooted every minute or so. Most unstable thing ever.
Sure it booted in 2 seconds, and he just went about his merry way, but.. what?! Guy could have still overclocked a little less and had stability, but nope.
Yes it is but there's more to overclocking than just the CPU. You also need adequate cooling and fine-tuning of parameters I'll never truly understand. There are so many moving parts that you're not guaranteed anything. It seems like the CPUs were actually running at their overclocked speeds, but the rest of the system couldn't keep up.
