Hardware Spec Index

Brontix FN-3988 Pro 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3988-PRO · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index637 (Case Fans scale)
Category rank#10,850
Street price$19
Power3 W
Performance per dollar33.53
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3988 Pro
Size140 × 140 × 25 mm
Speed200–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3988 Pro 140mm PWM Case Fan”, https://vextor7.com/item/35458506 (accessed 2026-10-20).