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CPU cooler · MODEL NOTES

Noctua NH-U12S redux

A slim tower that puts space around the socket ahead of a larger dual-tower layout.

Check with my buildRead the specifications ↓
The decision

The NH-U12S redux makes sense when accessible memory and a relatively narrow cooler are more useful than filling the socket area. Its single NF-P12 redux fan also keeps the initial wiring simple. Decide on the 158 mm installed height and exact motherboard compatibility before assuming it will fit any ordinary ATX case.

Consider it when

  • A conventional build where a slim single tower simplifies assembly.
  • Reusing the cooler across supported sockets with the proper mounting parts.

Look again when

  • A compact case with a height limit below 158 mm.
  • A heavy sustained workload selected without checking cooling evidence for the CPU and power limits.

THE SPACE IT NEEDS

Check the height with the fan installed

158 mmPublished height
Original dimension guide. The primary dimension is scaled; other geometry is schematic.
Published cooler height
158mm

Confirm the manufacturer fan position, RAM clearance and the case side-panel limit. The drawing does not measure cooling performance.

Check cooler and RAM clearance ↗

Based on the manufacturer specification record, checked . Check the exact revision and installation instructions before buying.

The checks that can change your choice

Check the redux package contents

Older stock and second-hand units may not contain the mounting hardware shown on the current website. Include any required kit in the buying decision and check that all spacers and screws are present.

Do not buy a second fan by default

Start with the intended case airflow and fan curve. An additional fan is a separate fit, cabling and acoustic choice; the presence of mounting space alone does not prove that it improves your particular system.

Published specifications

Slim single tower; four heatpipes; one NF-P12 redux PWM fan; total height 158 mm.

BrandNoctua
Exact modelNH-U12S redux
Cooler mounting socketsAM5, AM4, LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150
Published cooler height158 mm; fan position can change this
Cooler designair

Socket support refers to current mounting hardware; check older stock and motherboard compatibility.

Catalog record checked . Manufacturer specifications. The individual references below show the dates used for these model notes.

A different choice worth checking

DeepCool AK400The AK400 keeps the choice focused on a single 120 mm fan and a 155 mm tower. Shortlist it when replacing a basic cooler or finishing a mainstream build; judge the result against your actual CPU power limits and case airflow, rather than treating four heatpipes as a guaranteed cooling capacity.Read this model’s tradeoffs ↗Noctua NH-D15Resolve the actual fan arrangement before buying. If the case leaves little height allowance, a cooler that clears the RAM without raising a fan may be a simpler choice than planning around the limit.Read this model’s tradeoffs ↗

These alternatives address related choices. Recheck their platform, connections and fit before treating one as a replacement.

Parts lists using this exact model

These lists show the surrounding components and the tradeoffs. They are editable planning examples, not measured systems.

Follow the check that matters to your build

Sources and review notes

RigAtlas connects manufacturer specifications to component choices. This page is document-based analysis; it does not claim a hands-on test or a current store offer.

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Review this component with your existing selections before making the change.

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