Hardware Spec Index

Brontix FN-9121 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9121-PRO · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index440 (Case Fans scale)
Category rank#5,043
Street price$19
Power4 W
Performance per dollar23.16
Released2022

Specifications

BrandBrontix
ModelBrontix FN-9121 Pro
Size120 × 120 × 25 mm
Speed300–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9121 Pro 120mm PWM Case Fan”, https://vextor7.com/item/460789 (accessed 2026-10-20).