I'm very happy with it. Replaces the stock Coolermaster Sickleflow fans that came with the ML240L V2 heatsink. They were very noisy and didn't cool well. They make almost 0 audible noise when idling (web browsing etc.), run quieter and cool the CPU by 5-10 degrees while gaming. To be honest, I didn't expect such a significant improvement. I cannot recommend them enough. The cables were long enough to be fully stowed in a Mini-ITX case. I was initially concerned that the standard fans are 25mm wide and these are 27mm, but they fit perfectly (better than expected) with the stock screws. My only minor complaint is that when installed side-by-side there is no room between the fans to run cables. I'm not even sure if this is normal (but it looks like non-Bionx would be better at it) and there's nothing a few zip ties can't fix. The price is much better than the competition.
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