Hardware Spec Index

Brontix FN-7581 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN7581-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index539 (Case Fans scale)
Category rank#20,634
Street price$19
Power3 W
Performance per dollar28.37
Released2025

Specifications

BrandBrontix
ModelBrontix FN-7581 Ultra
Size140 × 140 × 25 mm
Speed300–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-7581 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/3077415 (accessed 2026-10-20).