Hardware Spec Index

Brontix FN-3921 Pro 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3921-PRO · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index1,047 (Case Fans scale)
Category rank#15,699
Street price$39
Power4 W
Performance per dollar26.85
Released2024

Specifications

BrandBrontix
ModelBrontix FN-3921 Pro
Size120 × 120 × 25 mm
Speed300–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3921 Pro 120mm PWM ARGB Case Fan”, https://vextor7.com/item/9784929 (accessed 2026-10-23).