Well, not sure what else to say other than my Lancool III with stock fans is honestly the quietest case I've ever owned, quieter than some "silence"-focused cases I've bought in the past with noise-dampening padding. This is after I've customized the fan curve, but I've never had temps this good with a fan curve this restrained before. Would fans from arctic, noctua, or other companies be even quieter? Maybe, but this is still pretty quiet to me, as someone who values low noise levels.they are just simply noisy, at low speeds, at moderate speeds when compared even with "cheap" artic fans. I had experience with other case brands, for the cost theirs are really bad