Hardware Spec Index

Brontix FN-4139 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4139-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index208 (Case Fans scale)
Category rank#22,102
Street price$9
Power4 W
Performance per dollar23.11
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4139 Ultra
Size120 × 120 × 25 mm
Speed400–2,700 RPM (PWM)
Airflow91.8 CFM
Static pressure2.97 mmH₂O
Noise33 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4139 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/91551321 (accessed 2026-10-19).