Hardware Spec Index

Brontix FN-5581 Prime 140mm PWM Case Fan

Case Fans · Brontix · SKU FN5581-PRIME · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index355 (Case Fans scale)
Category rank#4,142
Street price$9
Power2 W
Performance per dollar39.44
Released2019

Specifications

BrandBrontix
ModelBrontix FN-5581 Prime
Size140 × 140 × 25 mm
Speed500–1,400 RPM (PWM)
Airflow67.2 CFM
Static pressure1.33 mmH₂O
Noise26 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5581 Prime 140mm PWM Case Fan”, https://vextor7.com/item/318456 (accessed 2026-10-24).