NP at all. I wanted to see the noise and I got it. I have to say that when I mount my noctuas vertically I can not not hear them at all - the push up. Would be an interesting test to change the orientation of the fans from vertical to horizontal.

I am looking forward to next tests. Would be good to see the fans verse cooling on rads. I know there are a few around but noctua P12 are not on many.