Hardware Spec Index

Zephyra FN-3705 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN3705-ULTRA · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index325 (Case Fans scale)
Category rank#19,444
Street price$9
Power3 W
Performance per dollar36.11
Released2019

Specifications

BrandZephyra
ModelZephyra FN-3705 Ultra
Size140 × 140 × 25 mm
Speed500–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3705 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/7020443 (accessed 2026-10-24).