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

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.

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

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!!!

This was really easy to install and mounted on to my Noctua D15s fan easily! Helped reduce temperatures of my cpu about 1-3 degrees which was nice. Highly recommend this one!

Added this as a second fan to the NH-U12S Redux Cooler for an Intel i7-12700K CPU. Setup was straight forward as with other Noctua coolers/fans. This helped to drop the CPU temp about 2 degrees on average at idle/load. Good upgrade at such low price point.

I bought this fan in addition to the NH-U12S cooler, with the single fan the cooler comes with my temps were around 38-45 at idle and around 60-65c under load. With this fan installed in a push-pull configuration, it dropped to around 35-40 at idle and around 50-60 under load. So for $16, it did help to drop my temps a few degrees, which i think is well worth it.

This fan dropped my NH-U12S coolers capability on my 5800x CPU by 3-4c consistently. To me thats well worth the price. My 5800x turned out to be a good cpu and I am able to boost to 4.7 consistently using the U12S and this added fan. Very happy with it.

Doesnt cost much more for the second fan upgrade and makes a nice difference!

Mounts the same way as the CPU fan that comes with the cooler. One thing to note for those that are concerned with aesthetics, the rubber pads on this fan are slightly thicker than the ones one the ones that come with the cooler. Theres a slightly larger gap, but either thats intentional or I just happened to get some slightly thicker rubber pads. Otherwise, doesnt bother me too much.

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