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.

Overall great product but keep in mind that it does not come with screws, unless you have mounting screws of your own this is not a problem. U feel like a set of screws should’ve been added to give the buyer a more flexible spectrum of where they could place this fan. Fan itself is a 5 star, kit would be like a 4 1/2 would definitely buy again if needed.

Worth the price. Reduced case temps, runs quiet.

I am using the Noctua NH-U12S Redux on a Ryzen 5 5600 overclocked to 4.65ghz. Running Cinebench R23 at full load I was topping off at 81-82c before adding this second fan and now under full load running the same test, I max out at 76-77c. Thats a 5-degree drop for only $18.18 with tax.

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.

Used it with noctua cooler for push/pull configuration.

EXCELENTE

Was missing the Y-splitter and the low noise adapters. I wasnt planning on using them, but I did pay for them..

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.

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