Case fans, noctua nh-a14 flx or uln?

-Alex-

Honorable
Aug 28, 2013
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0
10,630
hi

I have a fractal r4 case and my fractal fans have coil whine, I want replace them with very quiet noctuas, I'm using the fractal fan controller at 7v (I usually don't change it), which is more suitable and recommended for fractal case, flx or uln version?

Thanks!