Hardware Spec Index

Zephyra FN-3684 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3684-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index331 (Case Fans scale)
Category rank#17,534
Street price$9
Power3 W
Performance per dollar36.78
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3684 Ultra
Size120 × 120 × 25 mm
Speed200–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise32 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3684 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/2886487 (accessed 2026-10-22).