Hardware Spec Index

Brontix FN-9721 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9721-PRO · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index321 (Case Fans scale)
Category rank#35,494
Street price$9
Power3 W
Performance per dollar35.67
Released2024

Specifications

BrandBrontix
ModelBrontix FN-9721 Pro
Size120 × 120 × 25 mm
Speed300–2,300 RPM (PWM)
Airflow78.2 CFM
Static pressure2.53 mmH₂O
Noise25 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9721 Pro 120mm PWM Case Fan”, https://vextor7.com/item/7230449 (accessed 2026-10-23).