Connect it to the fan controller and booted. Result: Runs well and easily and is rotating at 900 rev / min but about 300 U / min faster than the pre-installed 200mm fan. This it sucks air from properly if necessary, is then also among the fans out clearly audible. According pack specification: 27.5dB (A).
With me schrabten after installing the fan blades at a few crossbars of the Case '. I mean, the fan blades must probably just as high as the frame to be (25mm). If the fan so rests somewhere, scrape the leaves on the ground. ... Tjoa, a little cardboard between case and fan frame has solved the problem.
Conclusion: Makes a sophisticated look and is doing what he should. "Quiet" is indeed something else, but that's not to be expected with a 200mm fan.
