Hardware Spec Index

Brontix FN-3978 Core 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3978-CORE · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index408 (Case Fans scale)
Category rank#18,330
Street price$19
Power4 W
Performance per dollar21.47
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3978 Core
Size140 × 140 × 25 mm
Speed500–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3978 Core 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/21780493 (accessed 2026-10-25).