Hardware Spec Index

Brontix FN-9991 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9991-ULTRA · Released 2024 · Updated 2026-10-24

Key facts

Benchmark index657 (Case Fans scale)
Category rank#46,075
Street price$19
Power3 W
Performance per dollar34.58
Released2024

Specifications

BrandBrontix
ModelBrontix FN-9991 Ultra
Size120 × 120 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise28 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9991 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/2164909 (accessed 2026-10-24).