Even if it has now taken a little longer and some impatient contemporaries have repeatedly demanded a prompt publication: It was by no means a case of us sitting it out, but rather a lot of precise work to work through almost a year of fan tests and conduct a fair investigation into the causes of the totally botched fan test of the Alphacool 120 mm Apex Stealth Metal Fan. But today the time has finally come and there will certainly be interesting findings for everyone. First and foremost, even Igor will be surprised, although he was of course informed of the essentials by me in advance. If you don’t yet know what it’s all about (which is probably very few people), you should read the articles on the last page beforehand and also watch the video by Roman aka der8auer, as it will underpin one or two things later on.
Necessary foreword: What I need to say by way of introduction
Today I’ll give you the facts about Apex Metal Fan in a nutshell. That means I’ll try to keep it as simple as possible. The experts from the fields of measurement technology, SixSigma or experts in fluid dynamics, physicists or engineers etc.: Please bear with me if I paraphrase or omit technical terms in some places or reformulate the basics of physics in such a way that the majority will understand it in the end. I also ask readers who do not come from these fields to bear with me if I do not use simplified words to express certain terms or contexts. My motto here is: there are things in life that cannot be expressed in words – lemons, for example!
And now I’ll start with the fact that the Apex Metal Fan with its up to 3,000 rpm can’t do what the former tester said it could. I can refute the rumored “fan revolution” based on facts! However, the fact that I was still able to reproduce at least some of the fabulous values in the end will also make one thing clear: That either technical ignorance, including serious operating errors, must have been present here or even a presumed intent, since I arrived at almost exactly the same – wrong – results by deliberately setting the wrong defaults. But only then. Each reader must make their own judgment as to what really led to the results not being as good as the necessary standard specifications could have ensured, because I am not a judge, just a process developer.
This also applies to the current state of the measuring system and some components up to the measuring devices, which I do not want to comment on verbally in great detail, but have documented transparently in the pictures, without retouching any traces of handling this technology. The following picture will surely also explain why so much time was needed to be able to reproduce the measurements validly. By the way, the measuring devices were located under the heavy radiators, but fortunately only had to be cleaned. Therefore, for the counter-test (after some benevolent repairs), I am also using the exact same setup with the same technology.
Just for a better understanding: please allow me to use one or the other formulation or idiom in the course of the analysis that may not meet the expected high text standards for such an analysis. But I also had to process what I had experienced and seen here for myself and loosen up the rather bone-dry reading material that now follows. Let’s call it self-irony from Igor’s point of view, but I can’t and won’t bend.
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