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

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.

Its greats and actually works but its a little loud and its a pain to install. Is it worth it though? My answer is absolutely. Also use the noise adapters since they actually do reduce noise.

This kit is suppose to be a secondary fan to the NH-U12S Redux Cooler. First, let me say that this is my second Noctua purchase. Their fans and accessories are top notch. They are the ROLEX of the PC Fan industry and dont skimp on quality of their products. The fan upgrade however is not what I expected, the fan blades are entirely different than the one that comes on the Redux cooler. Although, the same size, different blades and the rubber grey sound dampeners are even twice as thick as the fan that comes with the Redux. Not sure if this was a mistake or if Noctua intentionally allowed this variance in product types, but the sound dampener on the upgrade fan makes it very difficult to install and the noise from the second fan is more pronounced which I can tell between the original and upgrade fan.

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

The Hype is real! Noctua products bring exceptional quality with low noise and dependable cooling! However, the size of the 120 mm fan is bigger than you may think. I’d recommend measuring clearances before buying them.

Noctua seal of quality

The reason why I ordered this kit was for the fan clips I needed an extra set for my fuma 2 and because scythe discontinued their fan mounting clips I thought I would try ordering this redo kit even though I do not need the fan to see if it would allow me to mount the 3rd fan I needed to mount on My

I bought this to slap on the front of my NH-D15 so I could move the other two fans back a slot and have three fans, because Im stupid, and was curious to see if there would be much of a difference in temps. Well, there was. About 9c, so Im going to leave it on there.

Muy buen producto, llego a tiempo, lo ocupo con un i5 11400 que suele ser un procesador muy caliente y las temperaturas no pasan los 50°c y mientras no se ocupa sus temperaturas bajan hasta 20°c lo cual ed genial, recomiendo ocupar una configuracion de 2 ventiladores con el kit extra para una refrigeracion mas eficaz y menos ruidosa.

This cooler in combination with the 2nd fan upgrade kit dropped my CPU temps from almost 80 degrees to 55 at most under high stress. They have been absolutely amazing and rarely even need to go above half of their potential RPM making my system as a whole way quieter than it was before. Not to mention the price for what youre getting if you do take the bundle, definitely worth the price, no more stutters no more hot CPU wonderful product