Hardware Spec Index

Brontix FN-3948 Ultra 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3948-ULTRA · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index1,366 (Case Fans scale)
Category rank#4,195
Street price$49
Power3 W
Performance per dollar27.88
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3948 Ultra
Size120 × 120 × 25 mm
Speed400–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise24 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3948 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/4438562 (accessed 2026-10-24).