Hardware Spec Index

Zephyra FN-3991 Core 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3991-CORE · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,254 (Case Fans scale)
Category rank#8,990
Street price$49
Power3 W
Performance per dollar25.59
Released2022

Specifications

BrandZephyra
ModelZephyra FN-3991 Core
Size120 × 120 × 25 mm
Speed500–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3991 Core 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/971199 (accessed 2026-10-21).