Hardware Spec Index

Brontix FN-3821 Ultra 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3821-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index1,274 (Case Fans scale)
Category rank#41,640
Street price$49
Power3 W
Performance per dollar26.00
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3821 Ultra
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3821 Ultra 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/2964296 (accessed 2026-10-19).