Hardware Spec Index

Brontix FN-3421 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3421-ULTRA · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index740 (Case Fans scale)
Category rank#38,023
Street price$19
Power4 W
Performance per dollar38.95
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3421 Ultra
Size140 × 140 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3421 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/45800903 (accessed 2026-10-24).