Hardware Spec Index

Brontix FN-3581 XT 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3581-XT · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index476 (Case Fans scale)
Category rank#1,509
Street price$19
Power4 W
Performance per dollar25.05
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3581 XT
Size140 × 140 × 25 mm
Speed300–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3581 XT 140mm PWM Case Fan”, https://vextor7.com/item/4517549 (accessed 2026-10-24).