Hardware Spec Index

Zephyra FN-3970 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN3970-ULTRA · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index593 (Case Fans scale)
Category rank#47,446
Street price$19
Power3 W
Performance per dollar31.21
Released2019

Specifications

BrandZephyra
ModelZephyra FN-3970 Ultra
Size140 × 140 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3970 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/442489 (accessed 2026-10-20).