Some review says that A12x25 + 14cm adapter is superior than A14 for silent setup. I can confirm that since I have both A12x25 and A14. A12x25 is impressive but a bit disappointed for A14's bass noise. dBA isn't a perfect metric how human feel the sound annoying
I agree, but I'm confident Noctua will tackle that with the next iteration of their 140mm fans which is currently scheduled to be released in Q1 2022 [1].
