The noise is very irritating, but the replacement I had in stock, didn't help much either.
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Probably too many rpms and/or way more cooling power, or whatever.
So now I plan to replace it with a new low noise Sharkoon fan (type S40).
My challenge however is that it has a displacement of only 5.9 ccm/hour, while the old one pushed away 8.8 ccm/hour.
Would that be too big of a difference in heat accumulation, you think?