Hardware Spec Index

Brontix FN-4577 XT 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4577-XT · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index557 (Case Fans scale)
Category rank#18,281
Street price$19
Power3 W
Performance per dollar29.32
Released2023

Specifications

BrandBrontix
ModelBrontix FN-4577 XT
Size140 × 140 × 25 mm
Speed400–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4577 XT 140mm PWM Case Fan”, https://vextor7.com/item/92438627 (accessed 2026-10-24).