Hardware Spec Index

Brontix FN-4991 Core 120mm PWM Case Fan

Case Fans · Brontix · SKU FN4991-CORE · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index413 (Case Fans scale)
Category rank#42,011
Street price$19
Power3 W
Performance per dollar21.74
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4991 Core
Size120 × 120 × 25 mm
Speed300–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4991 Core 120mm PWM Case Fan”, https://vextor7.com/item/21781185 (accessed 2026-10-25).