Hardware Spec Index

Brontix FN-5721 Prime 140mm PWM ARGB Case Fan (3-Pack)

Case Fans · Brontix · SKU FN5721-PRIME · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index921 (Case Fans scale)
Category rank#11,799
Street price$29
Power4 W
Performance per dollar31.76
Released2021

Specifications

BrandBrontix
ModelBrontix FN-5721 Prime
Size140 × 140 × 25 mm
Speed400–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5721 Prime 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/7262126 (accessed 2026-10-25).