Hardware Spec Index

Zephyra FN-3689 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3689-PRIME · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index228 (Case Fans scale)
Category rank#15,802
Street price$9
Power3 W
Performance per dollar25.33
Released2020

Specifications

BrandZephyra
ModelZephyra FN-3689 Prime
Size120 × 120 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3689 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/7980969 (accessed 2026-10-20).