Hardware Spec Index

Brontix FN-4421 Pro 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4421-PRO · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index330 (Case Fans scale)
Category rank#29,031
Street price$9
Power4 W
Performance per dollar36.67
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4421 Pro
Size140 × 140 × 25 mm
Speed500–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4421 Pro 140mm PWM Case Fan”, https://vextor7.com/item/535078 (accessed 2026-10-23).