Hardware Spec Index

Brontix FN-4657 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4657-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index720 (Case Fans scale)
Category rank#24,713
Street price$19
Power3 W
Performance per dollar37.89
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4657 Ultra
Size120 × 120 × 25 mm
Speed200–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4657 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/53661682 (accessed 2026-10-21).