be quiet!
be quiet! Silent Wings 4 140mm PWM 1100 RPM Premium Low Noise Cooling Fan | 4-Pin | BL096
Bottom line: The be quiet! Silent Wings 4 140mm PWM 1100 RPM Low Noise Cooling Fan ($24.90 on Amazon as of 2026-10-21 10:26 UTC): 1100 RPM cap keeps PWM ramps gentle, no sudden noise spikes; main trade-off: 1100 RPM ceiling limits peak airflow versus high-RPM radiator fans.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 1100 RPM cap keeps PWM ramps gentle, no sudden noise spikes
- ✓ Funnel-shaped frame outlet plus tight tip clearance for real static pressure
- ✓ 6-pole motor and fluid-dynamic bearing cut vibration and bearing chatter
- ✓ Ships with both anti-vibration push pins and screw mounting hardware
Cons
- ✗ 1100 RPM ceiling limits peak airflow versus high-RPM radiator fans
- ✗ 140mm only, no fit in 120mm-limited cases or radiators
- ✗ No ARGB or lighting, purely a performance and acoustics fan
- ✗ Single fan per box, multi-fan builds add up fast
Manufacturer description
The be quiet! Silent Wings 4 140mm PWM fan is built for builders who want airflow without the drone. The 6-pole motor and fluid-dynamic bearing are the reason it stays civil under load: more pole pairs mean smoother torque delivery and less motor vibration, and the FDB keeps the rotor quiet where a sleeve bearing would start ticking. be quiet! rates operation at regular speed as virtually inaudible, and the capped 1100 RPM ceiling means PWM ramps stay gentle rather than spiking. Mounting is flexible. You get anti-vibration push pins for decoupled case installation and a traditional screw…
SpecPicks Verdict
SpecPicks scored be quiet! Silent Wings 4 140mm PWM 1100 RPM Low Noise Cooling Fan using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. be quiet!'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.
Frequently Asked Questions
How loud is the Silent Wings 4 140mm at full speed?
be quiet! rates it as virtually inaudible at regular speed. The 1100 RPM ceiling is the key spec: it never spins fast enough to generate the motor whine higher-RPM fans produce. Check the product listing for the manufacturer's published dBA figure.
Is this fan good for an AIO radiator or just case airflow?
Both. It is built for pressure, not just flow, with small tip clearance and funnel-shaped air outlets in the frame designed to raise static pressure, which is what radiators and dense dust filters need.
What bearing does it use and how long will it last?
It uses a fluid-dynamic bearing paired with a 6-pole motor, which reduces vibration and avoids the ticking that sleeve bearings develop with age. Check the product listing for the current rated MTTF and warranty terms.
Does it need a 4-pin PWM header or will a 3-pin work?
It is a 4-pin PWM fan, so you need a 4-pin header for full speed control. Model number is BL096, 140mm, rated at 1100 RPM.
Do I get screws and push pins in the box?
Yes. be quiet! includes anti-vibration push pins for decoupled case mounting plus a screwed installation option for radiators and heatsinks where you need the fan clamped down.
Key Features
- Optimized fan blades for the highest performance
- Small tip clearance and a fan frame with funnel-shaped air outlets for extremely high air pressure
- Virtually inaudible operation at regular speed
- 6-pole fan motor and fluid-dynamic bearing for less vibration and very smooth operations
- Anti-vibration mounting with push pins and screwed installation option
Full Specifications
| Brand | be quiet! |
|---|---|
| Model | BL096 |
| Voltage | 12 Volts (DC) |
| Wattage | 3.6 watts |
| Material | Plastic |
| Set Name | PWM |
| Unit Count | 1.0 Count |
| Noise Level | 13.6 Decibels |
| Part Number | BL096 |
| Material Type | Plastic |
| Cooling Method | Air |
| Number of Items | 1 |
| Vibration/Rumble | Yes |
| Air Flow Capacity | 51.3 Cubic Feet Per Minute |
| Compatible Devices | Desktop |
| Power Connector Type | 4-Pin |
| Warranty Description | 1 year |
| Maximum Rotational Speed | 1100 RPM |
| Item Dimensions L x W x H | 5.51"L x 5.51"W x 0.98"H |
| Global Trade Identification Number | 04260052188880 |
Ready to buy?
be quiet! Silent Wings 4 140mm PWM 1100 RPM Premium Low Noise Cooling Fan | 4-Pin | BL096 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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