Hardware Spec Index

Brontix FN-3670 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3670-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index759 (Case Fans scale)
Category rank#15,786
Street price$29
Power3 W
Performance per dollar26.17
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3670 Ultra
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3670 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/41368654 (accessed 2026-10-25).