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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

  • ColorBrown
  • TypeFan & Heatsinks
  • Fan Size120mm
  • CPU Socket CompatibilityIntel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151,
  • Bearing TypeSSO2-Bearing ( Self-stabilising oil-presure bearing )
  • RPM1500 RPM (standard), 1200 RPM (w/ L.N.A.), 300 RPM (PWM)

Model NH-U12S

  • NH-U12S
  • NH-U12S DX-3647
  • NH-U12S TR4-SP3
  • NH-U12S SE-AM4
  • NH-U12A
  • NH-U12A chromax
  • NH-U12S redux

Struck-through versions exist but are not stocked here.

  • 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.

Highlights

  • 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

Specifications

BrandNoctua
ModelNH-U12S
ColorBrown
TypeFan & Heatsinks
Fan Size120mm
CPU Socket CompatibilityIntel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150 and AMD AM5, AM4
Bearing TypeSSO2-Bearing ( Self-stabilising oil-presure bearing )
RPM1500 RPM (standard),
1200 RPM (w/ L.N.A.),
300 RPM (PWM)
Air Flow54.97 CFM (standard),
43.73 CFM (w/ U.L.N.A)
Noise Level22.4 dB(A) (standard),
18.6 dB(A) (w/ U.L.N.A.)
Heatsink MaterialCopper ( Base and Heat-pipes), Alum.( cooling Fins ), Soldered Joints, Nickel Plated.
Fan Mounting Types to HeatsinkHorizontal
Max CPU Cooler Height158 mm
Weight755g
FeaturesAward-winning NH-U12 series
100% RAM compatibility
Classic 120mm tower size for excellent overall compatibility
NF-F12 120mm Focused Flow fan
PWM support and Low-Noise Adaptor
Anti-vibration pads and fan-clips for second NF-F12 (optional)
SecuFirm2 mounting system
Compatibility with past and future sockets
NT-H1 thermal compound
Shipping weight1.45 kg
Package size216 × 173 × 147 mm

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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