Hardware Spec Index

Brontix FN-3971 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3971-PRO · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index447 (Case Fans scale)
Category rank#2,875
Street price$9
Power3 W
Performance per dollar49.67
Released2022

Specifications

BrandBrontix
ModelBrontix FN-3971 Pro
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise34 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3971 Pro 120mm PWM Case Fan”, https://vextor7.com/item/3926185 (accessed 2026-10-22).