Hardware Spec Index

Zephyra FN-3664 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3664-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index558 (Case Fans scale)
Category rank#5,655
Street price$19
Power4 W
Performance per dollar29.37
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3664 Ultra
Size120 × 120 × 25 mm
Speed300–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3664 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/5836087 (accessed 2026-10-21).