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Brown Noctua NH-U12S slim tower CPU cooler with 120mm fan

Noctua

Noctua NH-U12S CPU cooler 120mm fan brown

SKU CH-VT2D-QA52N MPN NH-U12S

A slim 120 mm tower cooler with a focused-flow fan, PWM control and a low-noise adaptor fits Intel LGA1851, LGA1700, LGA1200, LGA115x and AMD AM5, AM4 sockets while clearing tall RAM and PCIe slots

  • Fan size120 mm
  • Supported CPU socketsIntel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151,
  • Bearing designSSO2-Bearing ( Self-stabilising oil-presure bearing )
  • Rotational speed1,500 RPM (standard), 1,200 RPM (w/ L.N.A.), 300 RPM (PWM)
  • Airflow rate54.97 CFM (standard), 43.73 CFM (w/ U.L.N.A)
  • Operating noise22.4 dB(A) (standard), 18.6 dB(A) (w/ U.L.N.A.)

Model NH-U12S

  • Slim 45mm tower keeps RAM slots fully accessible
  • NF-F12 fan delivers 54.97 CFM at just 22.4 dB(A)
  • PWM control drops speed to 300 RPM for silent idle
  • SecuFirm2 mounting covers Intel LGA1851, LGA1700, LGA1200, LGA115x and AMD AM5, AM4
  • 158mm height and 755g weight fit most compact cases

Classic 120mm slim tower for broad compatibility

The NH-U12S is a single-tower CPU air cooler built around a 120mm Focused Flow fan. Its 45mm slim profile ensures 100 percent RAM clearance and avoids PCIe slot overhang on most current motherboards. The SecuFirm2 mounting system supports Intel LGA1851, LGA1700, LGA1200, LGA115x and AMD AM5 plus AM4 sockets. It targets builders who want reliable cooling without clearance headaches.

Sustained load behaviour

Under continuous load the NF-F12 fan runs at up to 1500 RPM, delivering 54.97 CFM of focused airflow through the copper-base, nickel-plated aluminium fin stack. PWM support allows the motherboard to adjust speed automatically as temperatures rise. For quieter operation the supplied Low-Noise Adaptor reduces the maximum to 1200 RPM and 43.73 CFM, trading peak capacity for lower acoustic output during long sessions.

Thermals, noise and power draw in normal use

At the standard 1500 RPM setting the fan produces 22.4 dB(A), dropping to 18.6 dB(A) with the Low-Noise Adaptor fitted. Minimum PWM speed reaches 300 RPM for near-silent idle conditions. The heatsink weighs 755g and stands 158mm tall, fitting most mid-tower cases. Anti-vibration pads and fan clips minimise mechanical noise transmitted to the chassis.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $109.99
Pricier than about 91% of the 1,559 comparable items (median $19.99).
Fan size 120 mm
Higher than about 80% of the 812 comparable items (median 80 mm).

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Specifications

Product
Brand nameNoctua
Model nameNH-U12S
Product colorBrown
Product typeFan & Heatsinks
Performance
Rotational speed1,500 RPM (standard),
1,200 RPM (w/ L.N.A.),
300 RPM (PWM)
Airflow rate54.97 CFM (standard),
43.73 CFM (w/ U.L.N.A)
Size & build
Fan size120 mm
Bearing designSSO2-Bearing ( Self-stabilising oil-presure bearing )
Cooler materialCopper ( Base and Heat-pipes), Alum.( cooling Fins ), Soldered Joints, Nickel Plated.
Fan mountingHorizontal
Product weight755g
Shipping weight1.45 kg
Package size216 × 173 × 147 mm
Compatibility
Supported CPU socketsIntel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150 and AMD AM5, AM4
CPU cooler height limit158 mm
Environment & compliance
Operating noise22.4 dB(A) (standard),
18.6 dB(A) (w/ U.L.N.A.)

Questions about this item

How loud is the NF-F12 fan when the system runs continuously under load?

The NF-F12 120mm fan produces 22.4 dB(A) at 1500 RPM standard speed and 18.6 dB(A) at 1200 RPM with the Low-Noise Adaptor fitted.

Does the SecuFirm2 mounting kit support my motherboard socket out of the box?

The SecuFirm2 system covers Intel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150 and AMD AM5, AM4 sockets.

Will the 45mm slim tower clear tall memory modules on an older board?

The 45mm slim design guarantees 100% RAM compatibility and does not overhang RAM or PCIe slots on most current motherboards.

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