With regard to the technical data can look at Amazon or on the web along this everyone here. I have installed caused by delivery problems of the original NZXT fan, 2 pieces in my NZXT Phantom Big Tower housing. 1x 1x top of the page. Since I have a built-in fan control on the housing run both fans on the lowest level with me we all other fans also. Here they are not heard. Of course, you take it when I was on full body control but you should also be aware about that one fan on the side of a mesh grid are now full time on stage listening.
I find it, however, as not disturbing. Both fans run clean and about what I can well judge, since the side fan is only a few mm over my Noctua cooler and I would therefore hear an unbalance immediately ..
