Hardware Spec Index

Brontix FN-3721 XT 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3721-XT · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index517 (Case Fans scale)
Category rank#6,777
Street price$19
Power3 W
Performance per dollar27.21
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3721 XT
Size140 × 140 × 25 mm
Speed400–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise24 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3721 XT 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/8809447 (accessed 2026-10-20).