As we enter a phase of folks making mini DIY CRBoxes with stacked series fans, it would be nice to get some clarity on performance. The primary source used for putting spacers in-between for “performance” is one Noctua white paper, with one sentence about it and zero metrics: 🧵 
It’s not a great sentence. “Directly towards each other” implies opposition, yet why would anyone do that, prob just bad writing. “Reduced aero-acoustical performance” is very vague, and possibly only about sound level. @DavidElfstrom is there a better resource for this info?
Of course we want the best performance we can get. But adding spacers makes a mini not so mini, so it has to be truly justifiable. If there’s no CFM difference I wouldn’t do it. Noctua are the quietest fans so they might be focused on noise primarily. @JimRosenthal4 @robwiss
Here’s the Noctua white paper. It’s a useful doc for our niche but it’s inadequate. #crbox #warpcore
noctua.at/en/axial-fans-…
noctua.at/en/axial-fans-…
Last time I was testing:
https://twitter.com/crboxkits/status/1615434915792945154
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