Hardware Spec Index

Zephyra FN-1691 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN1691-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index255 (Case Fans scale)
Category rank#5,954
Street price$9
Power4 W
Performance per dollar28.33
Released2020

Specifications

BrandZephyra
ModelZephyra FN-1691 Ultra
Size140 × 140 × 25 mm
Speed200–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise32 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-1691 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/2578634 (accessed 2026-10-23).