Hardware Spec Index

Zephyra FN-3657 Prime 140mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN3657-PRIME · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index1,317 (Case Fans scale)
Category rank#3,788
Street price$49
Power4 W
Performance per dollar26.88
Released2019

Specifications

BrandZephyra
ModelZephyra FN-3657 Prime
Size140 × 140 × 25 mm
Speed300–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3657 Prime 140mm PWM ARGB Case Fan”, https://vextor7.com/item/90148624 (accessed 2026-10-24).