Hardware Spec Index

Zephyra FN-3947 Ultra 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN3947-ULTRA · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index922 (Case Fans scale)
Category rank#25,434
Street price$29
Power4 W
Performance per dollar31.79
Released2024

Specifications

BrandZephyra
ModelZephyra FN-3947 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3947 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/231202 (accessed 2026-10-20).