Hardware Spec Index

Zephyra FN-6637 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN6637-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index704 (Case Fans scale)
Category rank#37,968
Street price$19
Power3 W
Performance per dollar37.05
Released2020

Specifications

BrandZephyra
ModelZephyra FN-6637 Ultra
Size140 × 140 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-6637 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/91667143 (accessed 2026-10-23).