be quiet! Pure Wings 3 140mm PWM high-Speed
Bottom line: The be quiet! Pure Wings 3 140mm PWM high-Speed ($34.90 on Amazon as of 2026-10-21 04:15 UTC): Closed-loop motor holds target RPM against radiator and grill resistance; main trade-off: high-speed model favors airflow, so louder than a standard Pure Wings 3.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Closed-loop motor holds target RPM against radiator and grill resistance
- ✓ High 2.44 mm/H2O static pressure suits AIO radiators and dense air-cooled builds
- ✓ Three-fan pack covers a full 280mm or 420mm radiator in one box
- ✓ Rifle bearing rated for an 80,000-hour lifespan
Cons
- ✗ High-speed model favors airflow, so louder than a standard Pure Wings 3
- ✗ 140mm size only — won't fit 120mm fan mounts
- ✗ No RGB or addressable lighting
- ✗ Needs a 4-pin PWM header for full speed regulation
SpecPicks Verdict
SpecPicks scored be quiet! Pure Wings 3 140mm PWM high-Speed using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. be quiet!'s PC & gaming hardware 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 PC & gaming hardware 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
- Pure Wings 3 140mm PWM high-speed features a closed loop motor. This technology is comparable with the cruise control in cars. When working against resistance, for example a fan grill or radiator, fans spin slower as a result. The closed loop motor technology constantly monitors the current fan speed and increases it to the target rpm, if necessary. As a result, Pure Wings 3 140mm PWM high-speed always operates at the desired speed, no matter the resistance.
- The fan frame outlet is newly designed to minimize air leaks. This benefits especially the radiator performance of Pure Wings 3 140mm PWM high-speed. To reach even higher performance, the fan blades are optimized as well: Their angle is adjusted to achieve even more air pressure, adding up to the extraordinary performance of Pure Wings 3 140mm PWM high-speed.
- With a remarkably high air pressure of up to 2.44mm/H2O, Pure Wings 3 140mm PWM high-speed is the best choice for water-cooled and air-cooled systems alike. The 9 airflow-optimized fan blades provide enough air pressure to make this fan work great even in demanding configurations.
- Pure Wings 3 140mm PWM high-speed trims all the fat. Every part and single detail contribute to the functionality and uncompromising performance. This has also been considered in the design of the fan. All outlines and angles serve a purpose, making Pure Wings 3 140mm PWM high-speed a timeless classic and elegant addition to every gaming PC.
- Pure Wings 3 140mm PWM high-speed is built to last. With the proven rifle bearing technology, on average, this fan offers a lifespan of 80,000 hours.
Full Specifications
| Brand | be quiet! |
|---|---|
| Model | BL138 |
| Voltage | 12 volts |
| Wattage | 6 watts |
| Unit Count | 3 Count |
| Noise Level | 30.5 db |
| Part Number | BL138 |
| Compatibility | PC |
| Cooling Method | Air |
| Number of Items | 3 |
| Air Flow Capacity | 72 cfm |
| Compatible Devices | Radiator |
| Power Connector Type | 4-Pin |
| Maximum Rotational Speed | 1800 rpm |
| Item Dimensions L x W x H | 5.5"L x 1"W x 5.5"H |
| Global Trade Identification Number | 04260052193846 |
| Full listing title | be quiet! Pure Wings 3 140mm PWM high-Speed, 3 Included, Speed-regulating Closed Loop Motor, high top-end Speed, Low Minimum RPM, Optimized Fan Frame, Newly Designed Fan Blades |
Ready to buy?
be quiet! Pure Wings 3 140mm PWM high-Speed, 3 Included, Speed-regulating Closed Loop Motor, high top-end Speed, Low Minimum RPM, Optimized Fan Frame, Newly Designed Fan Blades 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.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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