I opted for the fan of Fractal, because this is a bit cheaper and minimal volume up according to the technical specifications as the Be Quit.
I also took advantage of the Fractal Design Define R4 Tower in the special edition, closed side panel and cover, with now 4 case fans. What can I say, the external hard drives via USB3 are louder than the Tower and is located right next to me under the desk.
Highly Recommended
Greeting
Michael
The fans are all speed controlled by the motherboard