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be quiet! Silent Wings 4 120mm PWM High-Speed vs SilverStone AP121: Comparison

be quiet! Silent Wings 4 120mm PWM High-Speed and SilverStone AP121 separate most on static pressure: be quiet! Silent Wings 4 120mm PWM High-Speed at 3.96 mmH2O, SilverStone AP121 at 1.71 mmH2O, 57% in favour of be quiet! Silent Wings 4 120mm PWM High-Speed. Airflow splits them by another 54%, again favouring be quiet! Silent Wings 4 120mm PWM High-Speed. They match on fan size, bearing type and fan thickness.

be quiet! Silent Wings 4 120mm PWM High-Speed (2500 RPM/76.7 CFM/31.2 dBA/6-Pole Motor/Fluid Dynamic Bearing 300,000hr)
be quiet!be quiet! Silent Wings 4 120mm PWM High-Speed
SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM)
SilverStoneSilverStone AP121

Specs

Specification
be quiet! Silent Wings 4 120mm PWM High-Speed (2500 RPM/76.7 CFM/31.2 dBA/6-Pole Motor/Fluid Dynamic Bearing 300,000hr)
be quiet! Silent Wings 4 120mm PWM High-Speed
SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM)
SilverStone AP121
Fan Size120 mm120 mm
Brandbe quiet!SilverStone
ModelSilent Wings 4 120mm PWM High-SpeedAP121
Bearing TypeFluid DynamicFluid Dynamic
Fan Thickness25 mm25 mm
Static Pressure3.96 mmH2O1.71 mmH2O-57%
Max Speed2500 RPM1500 RPM-40%
Noise Level31.2 dBA+8.8 dBA22.4 dBA
Airflow76.7 CFM35.36 CFM-54%
PWM ControlYesNo
Connector Type4-Pin PWM3-Pin DC
Source URLhttps://www.bequiet.com/en/casefans/3701https://www.silverstonetek.com/en/product/info/coolers/AP121/

Price comparison

Retailerbe quiet! Silent Wings 4 120mm PWM High-SpeedSilverStone AP121
AmazonView on Amazon
NeweggView on Newegg

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Verdict

be quiet! Silent Wings 4 120mm PWM High-Speed

8 / 10 Expert Rating

More airflow than the quiet-first competition, with a bearing rating built for a decade of running.

SilverStone AP121

6 / 10 Expert Rating

A competent, unremarkable fan best chosen for brand consistency in a SilverStone build rather than outright performance.

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