Hardware Spec Index

Brontix FN-3581 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3581-ULTRA · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index821 (Case Fans scale)
Category rank#47,217
Street price$29
Power2 W
Performance per dollar28.31
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3581 Ultra
Size140 × 140 × 25 mm
Speed300–1,400 RPM (PWM)
Airflow67.2 CFM
Static pressure1.33 mmH₂O
Noise29 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3581 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/1767366 (accessed 2026-10-19).