This came up also in the 14400 review thread but went a bit unanswered so I'm asking again: why is it advised to get an aftermarket cooler?
Would be interesting to see some real world data on this in addition to the "this is the generally accepted point-of-view". To me it's not even about the cost (which is trivial anyway) but the fact that you're just throwing away a perfectly fine cooler "just because". At least I've not seen any test setup where the 14400 would've throttled with stock cooler. Also I doubt the overall noise level is that much higher either when considering that you're also running a GPU with that.
Agreed. An aftermarket cooler is superior for sure, but also unneccessary.
That said, AMD's stock coolers have improved in recent years. Intel not so much. It's good enough i guess.
For any more powerfull intel, it would be better to use an aftermarket cooler, K or not. For fan noise if nothing else.
Noise may be irrelevant when GPU fans kick in, but not when they're stopped and the CPU is working hard on something non gaming related.
But there is a hidden penalty to tower air coolers. If your PC case is going to be moved, or bounced around in a car, you have to take off the cooler or risk damaging the motherboard. With intel stock cooler, there is no chance of damage.
14400 may benefit slightly from a better cooler but not much.