Noctua NA-FK1 Redux, Second Fan Upgrade Kit for NH-U12S Redux Cooler

Nice addition to my Noctua NH-U12S Redux and keeps my i5-12600k plenty cool. A little difficult to add on but thats because I clipped on while heatsink was still in my system and its a tight fit for my hands, but a great product.

Its a good little kit, it helped my cpu temps. My only real complaint is how thick the anti-vibration pads are. Theyre twice as thick as the pads that come with the original cooler, and the chromax vibration pads I had bought for some additional case fans. As far as I can tell theyre made this thick specifically for this kit and it made installation more difficult than it needed to be. It also causes the fan not to sit directly against the cooler fins. The coolers original fan does sit flush, so Im not sure why they make this kit so that the new fan doesnt.

Bought this upgrade for the heatsink I installed in my new rig and this fan was super easy to install with its quick connect brackets. Fan feels well constructed and is very quiet so far. Id recommend this.

I have the single fan cooler and it does a wonderful job of cooling vs the stock cooler. I am about 15 (C) degrees cooler with the Noctua. I went ahead and added this second fan and it gave me about 5 (C) degrees more for a total of 20 (C) vs the stock cooler (AMD).

I have an Intel I7-12700k that is overclocked and adding the second fan keeps the temps more than under control. The Noctua CPU fan is quiet and efficient. This is so much better than having an AIO stuffed in the case.

It’s like the first fan, the silicone brackets for the sides of the fan are a bit larger, so the clips have a harder time of going on but once you get it on its good. It comes with a Y-plot 4 pin connector and 2 extension cables for it as well. Great buy, worth it. Dropped temps well.

best quality. Works greats. No issues.

Used to add 2nd fan to an NH-D15 where the included 2nd 140mm wouldnt fit due to case width issues. This 120mm fit fine. Using the supplied 2 fan splitter I now have about a 4-5c lowering in temps across idle all the way to full throttle.

A simple but effective and easy to use add in kit. Well worth the money for the boost in performance.

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