Noctua NA-FK1 Redux, Second Fan Upgrade Kit for NH-U12S Redux Cooler
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Analog Cabin
Greater than one weekMounts 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.
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RS
> 3 dayWorks as expected.
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Matt T.
> 3 dayGreat upgrade to an already great cooler. This keeps my Ryzen 9 5900x nice and cool.
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Haji
04-06-2025rubber pads not for this model
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Taylor
> 3 dayI bought it thinking it was a second fan upgrade for the redux cooler, but not only is the fan different but the noise reduction pads are bigger than the stock ones. either way its a good purchase just be ready to put it on patiently
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paranor
> 3 dayDropped my temperatures a further 4 degrees Celsius compared to my single fan unit. Highly recommend
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s
Greater than one weekit comes with everything including fan clips. man. thanks noctua. This is how they all should come though.
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Ben
09-06-2025The 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.
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anon
Greater than one weekThe fan is quite silent under 1500rpm and is a really good fan for keeping your processor cool. The brackets only fit on nocrua coolers, so if you have any other cooler youll meed their specific brackets in order for this to work.
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Donald M. Chumley II
> 3 dayHad to modify my original fans clips to work with this fan but it fits tight, runs quiet, and keeps my processor cooler than original cooler master when it was new
The NA-FK1 is a second fan kit for the NH-U12S redux CPU cooler. Upgrading it to a push/pull-style dual-fan setup makes it possible to further improve cooling performance or to reduce noise levels by having two fans running at lower speeds. The kit includes a second NF-P12 redux-1700 PWM fan, anti-vibration pads, fan mounting clips, a 4-pin PWM y-cable as well as two Low-Noise Adaptors – everything you need to boost the efficiency of your NH-U12S redux!
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Enhanced cooling performanceAdding a second NF-P12 redux-1700 PWM fan to the NH-U12S redux makes it possible to further improve cooling performance by around 1-3°C, depending on the application. As a rule of thumb, the gains are bigger the higher the heat load, so the NA-FK1 is particularly attractive for higher-end CPUs, extensive turbo use or overclocking. |
NF-P12 redux-1700 PWMThe NF-P12 redux-1700 PWM fan included with the NA-FK1 is the same high-quality unit that comes pre-installed on the NH-U12S redux CPU cooler, so it’s a perfect match for a push/pull-style dual-fan setup. Supporting PWM for automatic speed control, it can run near silent most of the time and provide massive performance when necessary. |
Lower noise levels and acoustic fine-tuningThe NA-FK1 can not only be used to enhance cooling performance, but also to lower noise levels: by letting both fans run at reduced speeds, either via automatic PWM control using the supplied y-cable or via the included Low-Noise Adaptors, the NH-U12S redux can operate more quietly while maintaining the same level of performance. |
Specifications
Scope of delivery
- NF-P12 redux-1700 PWM fan
- 4x NA-AVP2 grey anti-vibration pads
- Fan mounting clips (one pair)
- NA-YC1 4-pin PWM y-cable
- 2x NA-RC14 Low-Noise Adaptor (L.N.A)
Connector & pin-configuration
4-pin PWM
Renowned Noctua quality
Noctua products are renowned for their impeccable quality and outstanding longevity. True to this legacy, the NF-P12 redux unit that comes with the NA-FK1 set features an MTTF rating of more than 150,000 hours.