Hardware Spec Index

Zephyra FN-3947 Core 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3947-CORE · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index722 (Case Fans scale)
Category rank#36,433
Street price$19
Power3 W
Performance per dollar38.00
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3947 Core
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise32 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3947 Core 120mm PWM Case Fan”, https://vextor7.com/item/7526431 (accessed 2026-10-25).