Hardware Spec Index

Brontix FN-9921 Pro 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN9921-PRO · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index809 (Case Fans scale)
Category rank#25,039
Street price$29
Power4 W
Performance per dollar27.90
Released2023

Specifications

BrandBrontix
ModelBrontix FN-9921 Pro
Size140 × 140 × 25 mm
Speed300–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise29 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-9921 Pro 140mm PWM ARGB Case Fan”, https://vextor7.com/item/89459811 (accessed 2026-10-25).