I was surprised how quiet they are! Compared to the standard fans that came with my Corsair 280x case, they not only fit better visually in the two front fan slots, but are also functionally better and quieter. (Why did Corsair put 2x 120mm fans in the box anyway?). They're not the brightest fans, narrowly outperformed by my $20 Thermaltake CPU air cooler, but at this price point, it's hard to complain. Excellent purchase. I am attaching a less lossy photo of them because it seems impossible to find.
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