Hardware Spec Index

Zephyra FN-3947 SE 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3947-SE · Released 2025 · Updated 2026-10-18

Key facts

Benchmark index553 (Case Fans scale)
Category rank#45,625
Street price$19
Power3 W
Performance per dollar29.11
Released2025

Specifications

BrandZephyra
ModelZephyra FN-3947 SE
Size120 × 120 × 25 mm
Speed200–2,300 RPM (PWM)
Airflow78.2 CFM
Static pressure2.53 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3947 SE 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/1349331 (accessed 2026-10-18).