Hardware Spec Index

Zephyra FN-3973 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3973-ULTRA · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index674 (Case Fans scale)
Category rank#40,714
Street price$19
Power3 W
Performance per dollar35.47
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3973 Ultra
Size120 × 120 × 25 mm
Speed500–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3973 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/51315622 (accessed 2026-10-25).