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AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed | UL-Certified for DIY Cooling Ventilation Exhaust Projects
AC Infinity

AC Infinity AXIAL LS1238

Bottom line: The AC Infinity AXIAL LS1238: Dual-ball bearings rated for 67,000 hours of continuous runtime; main trade-off: 38mm thick body won't fit slim 25mm fan brackets.

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

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Dual-ball bearings rated for 67,000 hours of continuous runtime
  • ✓ 62 CFM airflow at only 32 dBA on the low-speed tune
  • ✓ Runs on 100-120V AC wall power, no PSU header needed
  • ✓ Ships with two guards, screw set, and power plug cord

Cons

  • ✗ 38mm thick body won't fit slim 25mm fan brackets
  • ✗ 1800 RPM low-speed tune moves less air than high-speed siblings
  • ✗ AC-only, so no PWM or motherboard speed control
  • ✗ No inline speed controller included in the box

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SpecPicks Verdict

SpecPicks scored AC Infinity AXIAL LS1238 using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. AC Infinity's retro cpu coolers & 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 retro cpu coolers & 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

  • Designed for projects that requires cooling or ventilation; or as a replacement fan for various products.
  • Includes a heavy-duty aluminum fan with power plug cord, two fan guards, and mounting screw set.
  • UL-certified fan with dual-ball bearings has a lifespan of 67,000 hours. Can be mounted in any direction.
  • Low Speed: Has a lower noise and airflow rating than high speed models of the same size.
  • 120 x 120 x 38 mm (4.7 x 4.7 x 1.5 in.) | 100 to 120V AC | Airflow: 62 CFM | Noise: 32 dBA | Speed: 1800 RPM

Full Specifications

BrandAC Infinity
ModelLS1238A-X
Voltage120 volts
Wattage9 watts
MaterialCopper
Low SpeedHas a lower noise and airflow rating than high speed models of the same size.
Dimensions120 x 120 x 38 mm
Unit Count1 Count
Noise Level32 db
Part NumberLS1238A-X
Material TypeCopper
Cooling MethodAir
Number of Items1
Air Flow Capacity62 cfm
Compatible DevicesMuffin
Power Connector TypePower Cord with Plug
Maximum Rotational Speed1800 rpm
Item Dimensions L x W x H1.5"L x 4.72"W x 4.72"H
Full listing titleAC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed | UL-Certified for DIY Cooling Ventilation Exhaust Projects

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AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed | UL-Certified for DIY Cooling Ventilation Exhaust Projects 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.

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AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed | UL-Certified for DIY Cooling Ventilation Exhaust Projects
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