Hardware Spec Index

Zephyra FN-5664 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN5664-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index551 (Case Fans scale)
Category rank#7,400
Street price$19
Power3 W
Performance per dollar29.00
Released2021

Specifications

BrandZephyra
ModelZephyra FN-5664 Ultra
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise35 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-5664 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/98025223 (accessed 2026-10-26).