Hardware Spec Index

Brontix FN-3997 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3997-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index741 (Case Fans scale)
Category rank#17,680
Street price$19
Power3 W
Performance per dollar39.00
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3997 Ultra
Size120 × 120 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow81.6 CFM
Static pressure2.64 mmH₂O
Noise35 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3997 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/85532085 (accessed 2026-10-21).