Hardware Spec Index

Brontix FN-4257 XT 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4257-XT · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index610 (Case Fans scale)
Category rank#6,548
Street price$19
Power3 W
Performance per dollar32.11
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4257 XT
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4257 XT 140mm PWM Case Fan”, https://vextor7.com/item/6005486 (accessed 2026-10-21).