Hardware Spec Index

Brontix FN-9721 Prime 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9721-PRIME · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index407 (Case Fans scale)
Category rank#40,802
Street price$9
Power2 W
Performance per dollar45.22
Released2019

Specifications

BrandBrontix
ModelBrontix FN-9721 Prime
Size120 × 120 × 25 mm
Speed200–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9721 Prime 120mm PWM Case Fan”, https://vextor7.com/item/32930927 (accessed 2026-10-25).