Quiet case fans quiestions.

Sojiro1

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Jan 21, 2016
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Hello. I mounted a cooler master sickleflow 120mm on the side of my case.
Was loud even when I turned in down 500-700rpm. (2000rpm-700rpm=1300rpm)
Does anyone know of a quieter fan? (LED would be best)
Does bearing type effect noise level?
Does vibration effect noise level? (I notice other fans such as corsair have a padding which are said to reduce this)
Thanks for reading