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

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.

Great product. Thats pretty much it.

Using a second fan for a push/pull configuration. Not sure if it makes much difference, but worth a try

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).

Los accesorios de este noctua pueden ser compatibles con el noctua nh d15

I will forever only use noctua from now on!! Ive had way better Temps with this than using corsair aio or even cooler master. This is a budget one but underload Im at 55c and thats with a ryzen 5 3600. I would also spend the extra 25 bucks for the e tra fan upgrade as well!! The thermal paste on this is amazing!! As someone that normally uses arctic mx-4 chances to switching to noctua thermal is a highly high possibility!! I absolutely love this cooler and will keep with it for future builds!!!

Great upgrade to an already great cooler. This keeps my Ryzen 9 5900x nice and cool.

Cant go wrong with this one. High quality product for a great price. Ease of installation depends on how tight of a fit your case is, but its the same thing as the fan that comes with the cooler.

Mounts great to NH-D15 if memory slot issues cause a 140mm fan to be too big. In my case I could not get the door of my PC installed because the 140 was to tall. This 120mm allowed to to install the case door.