Hardware Spec Index

Brontix FN-7857 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN7857-PRIME · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index568 (Case Fans scale)
Category rank#25,109
Street price$19
Power3 W
Performance per dollar29.89
Released2022

Specifications

BrandBrontix
ModelBrontix FN-7857 Prime
Size120 × 120 × 25 mm
Speed300–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise32 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-7857 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/5839735 (accessed 2026-10-20).