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Noctua NF-A12x25 LS-PWM, Ultra Quiet Silent Fan, 4-Pin (120mm, Brown)
Noctua

Noctua NF-A12x25 LS-PWM, Ultra Quiet Silent Fan, 4-Pin (120mm, Brown)

Bottom line: The Noctua NF-A12x25 LS-PWM ($34.95 on Amazon as of 2026-10-21 04:20 UTC): Near-silent 12.1 dB(A) max at 1200 RPM under PWM control; main trade-off: 1200 RPM cap limits airflow on thick radiators vs high-speed fans.

$34.95

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Buy on Amazon — $34.95 Compare to similar cooling & fans

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Near-silent 12.1 dB(A) max at 1200 RPM under PWM control
  • ✓ Sterrox LCP impeller with 0.5mm tip clearance for high static pressure
  • ✓ Fan fully stops at 0% PWM for semi-passive zero-RPM setups
  • ✓ >150,000 h MTTF plus metal bearing shell for long-term reliability
  • ✓ Bundle adds anti-vibration mounts, y-cable, extension and radiator gasket

Cons

  • ✗ 1200 RPM cap limits airflow on thick radiators vs high-speed fans
  • ✗ Brown/beige colorway clashes with modern build aesthetics
  • ✗ No RGB or ARGB lighting for showcase builds
  • ✗ LS low-speed tuning trades peak airflow for lower noise

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SpecPicks Verdict

SpecPicks scored Noctua NF-A12x25 LS-PWM using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Noctua's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Ultra low noise fan, 120x120x25mm, 12V, 4-pin PWM, max. 1200 RPM, max. 12.1 dB(A), >150,000 h MTTF
  • Next-generation 120x25mm A-series design provides unprecedented quiet cooling performance, ideal for CPU coolers and watercooling radiators
  • State-of-the-art engineering (AAO frame, Flow Acceleration Channels, record tight 0.5mm tip clearance) and construction (Sterrox LCP material, metal-reinforced hub, metal bearing shell, etc.)
  • Ultra-quiet 4-pin LS-PWM version, ideal for semi-passive setups (fan stops at 0% PWM) or ultra-low-noise applications that require PWM control
  • Includes anti-vibration mounts, radiator gasket, fan screws, extension cable and y-cable for running two PWM fans on the same header

Full Specifications

BrandNoctua
ModelNF-A12x25 LS-PWM
Voltage12 Volts
MaterialSterrox® LCP
Dimensions120x120x25mm
Unit Count1.0 Count
Noise Level12.1 Decibels
Part NumberNF-A12x25 LS-PWM
Material TypeSterrox® LCP
Cooling MethodAir
Vibration/RumbleYes
Air Flow Capacity55.7 Cubic Meters Per Hour
Compatible DevicesDesktop
Included Components1 product
Power Connector Type4-Pin
Warranty Description6 year manufacturer’s warranty
Maximum Rotational Speed1200 RPM
Item Dimensions L x W x H4.72"L x 4.72"W x 0.98"H
Global Trade Identification Number09010018100556

Ready to buy?

Noctua NF-A12x25 LS-PWM, Ultra Quiet Silent Fan, 4-Pin (120mm, Brown) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $34.95

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Noctua NF-A12x25 LS-PWM, Ultra Quiet Silent Fan, 4-Pin (120mm, Brown)
$34.95
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