Noctua
Noctua NF-A20 5V PWM
Bottom line: The Noctua NF-A20 5V PWM: Near-silent 18.1 dB(A) max at only 800 RPM; main trade-off: 5V-only design won't run on standard 12V headers.
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Pros & Cons
Pros
- ✓ Near-silent 18.1 dB(A) max at only 800 RPM
- ✓ Runs off USB ports, power banks or 5V USB supplies
- ✓ Rated over 150,000h MTTF for long-term reliability
- ✓ Large 200x30mm A-series frame with Flow Acceleration Channels
- ✓ Bundles anti-vibration mounts, screws, extension cable, OmniJoin
Cons
- ✗ 5V-only design won't run on standard 12V headers
- ✗ 800 RPM ceiling limits peak airflow vs high-RPM fans
- ✗ Divisive Noctua brown-and-beige color scheme
- ✗ Uncommon 200mm size limits case and chassis fitment
SpecPicks Verdict
SpecPicks scored Noctua NF-A20 5V PWM using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. Noctua'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
- Premium quiet fan, 200x200x30 mm, 5V, 4-pin PWM, max. 800 RPM, max. 18.1 dB(A), >150,000 h MTTF
- Award-winning 200x30mm A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
- 5V 4-pin PWM version (800rpm maximum speed) with polarity protection for 5V applications with PWM speed control
- USB power adaptor cable allows the fan to run on devices with USB host ports, power banks or USB power supplies such as those used by smartphones
- Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connection to proprietary fan headers
Full Specifications
| Brand | Noctua |
|---|---|
| Model | NF-A20 5V PWM |
| Voltage | 5 volts |
| Material | Fibre-glass reinforced PBT |
| Dimensions | 200x200x30 mm |
| Unit Count | 1 Count |
| Noise Level | 18.1 db |
| Part Number | NF-A20 5V PWM |
| Connectivity | USB |
| Material Type | Fibre-glass reinforced PBT |
| Cooling Method | Air |
| Number of Items | 1 |
| Number of Packs | 1 |
| Vibration/Rumble | Yes |
| Air Flow Capacity | 146.9 cubic meter per hour |
| Compatible Devices | Desktop |
| Included Components | NF-A20 5V PWM |
| Power Connector Type | 4-Pin |
| Warranty Description | 6 year manufacturer’s warranty |
| Maximum Rotational Speed | 800 rpm |
| Full listing title | Noctua NF-A20 5V PWM, High-Performance Quiet Fan 200mm | High Airflow Low Noise, 5V, 30mm Thick Fan, for Ventilation and Electronics Cooling, USB-A Power Adaptor, 800rpm 4-Pin PWM |
Ready to buy?
Noctua NF-A20 5V PWM, High-Performance Quiet Fan 200mm | High Airflow Low Noise, 5V, 30mm Thick Fan, for Ventilation and Electronics Cooling, USB-A Power Adaptor, 800rpm 4-Pin PWM 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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