Hardware Spec Index

Zephyra FN-3690 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN3690-ULTRA · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index412 (Case Fans scale)
Category rank#42,793
Street price$19
Power4 W
Performance per dollar21.68
Released2024

Specifications

BrandZephyra
ModelZephyra FN-3690 Ultra
Size140 × 140 × 25 mm
Speed200–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3690 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/63251157 (accessed 2026-10-22).