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be quiet! Light Wings 140mm PWM Premium Low Noise ARGB Cooling Fan | 4-Pin | Black | BL074
be quiet!

be quiet! Light Wings 140mm PWM Premium Low Noise ARGB Cooling Fan | 4-Pin | Black | BL074

Status: be quiet! Light Wings 140mm PWM Premium Low…: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The be quiet! Light Wings 140mm PWM Premium Low Noise ARGB Cooling Fan: ARGB on both front and rear frames, 20 LEDs total; main trade-off: three-year warranty trails the 5-6 years some rivals offer.

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Currently unavailable on Amazon. Not the same product — an in-stock alternative:

Similar: be quiet! Silent Wings Pro 4 140mm PWM High… — $29.90 on Amazon as of 2026-10-21 04:20 UTC (price may vary).

View Current Price — $29.90
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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.

Pros & Cons

Pros

  • ✓ ARGB on both front and rear frames, 20 LEDs total
  • ✓ Caps at 23.3 dB(A) max, quiet at full speed
  • ✓ Rifle bearing rated for 60,000 operating hours
  • ✓ Syncs to motherboard ARGB, no proprietary hub needed

Cons

  • ✗ Three-year warranty trails the 5-6 years some rivals offer
  • ✗ 140mm frame will not fit 120mm-only mounts
  • ✗ Needs both a 4-pin PWM and an ARGB header per fan
  • ✗ Black-only colorway, no white frame option listed

Manufacturer description

The be quiet! Light Wings 140mm PWM brings ARGB lighting to a fan line better known for silence, and it does not trade one for the other. Twenty LEDs ring both the front and rear of the frame, so the glow reads from either side of a tempered-glass panel, and the illumination syncs directly with your motherboard's ARGB header rather than needing a proprietary controller. Seven silence-optimized blades move air while limiting the turbulence that produces whine, holding the fan to a maximum of 23.3 dB(A) at full tilt. Speed is PWM-controlled through the motherboard, so it ramps only when your…

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SpecPicks Verdict

SpecPicks scored be quiet! Light Wings 140mm PWM Premium Low Noise ARGB Cooling Fan using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. be quiet!'s power supplies 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 power supplies 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.

Frequently Asked Questions

How loud is the be quiet! Light Wings 140mm?

be quiet! rates it at a maximum of 23.3 dB(A), and the seven silence-optimized blades are shaped to cut the turbulence that causes whine at higher RPM.

Does the ARGB sync with my motherboard software?

Yes. The illumination can be synced with your motherboard's ARGB adjustments, so it follows the same lighting profiles as the rest of your components.

How long will this fan last?

The long-life rifle bearing is rated for an operating lifetime of 60,000 hours, and be quiet! includes a three-year manufacturer warranty.

Is the fan speed controllable?

Yes, it is a 4-pin PWM fan, so your motherboard controls the speed through a fan curve rather than running it at a fixed RPM.

How many LEDs does it have and where are they?

There are 20 LEDs providing ARGB lighting on both the front and rear of the fan, with multiple colors and modes available.

Key Features

  • ARGB lighting on front and rear
  • Multiple colors and modes for an individual look thanks to 20 LEDs
  • Seven silence-optimized fan blades for high airflow and low noise-generating turbulences
  • Very quiet operation with max. 23.3dB(A)
  • Long life rifle-bearing gives an operating lifetime of 60,000 hours

Full Specifications

Brandbe quiet!
ModelBL074
Voltage12 volts
Wattage3.8 watts
MaterialCopper
Set NamePWM
Unit Count1 Count
Noise Level23.3 db
Part NumberBL074
Material TypeCopper
Cooling MethodFan
Number of Items1
Number of Packs1
Air Flow Capacity56 cfm
Compatible DevicesDesktop
Included ComponentsFan
Power Connector Type4-Pin
Warranty Description1 year
Maximum Rotational Speed1500 rpm
Item Dimensions L x W x H5.51"L x 5.51"W x 0.98"H

Ready to buy?

Amazon shows no buyable offer for be quiet! Light Wings 140mm PWM Premium Low… at the last check. A similar in-stock product is be quiet! Silent Wings Pro 4 140mm PWM High…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $29.90

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be quiet! Light Wings 140mm PWM Premium Low Noise ARGB Cooling Fan | 4-Pin | Black | BL074
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