Hardware Spec Index

Zephyra FN-3657 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3657-PRO · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index457 (Case Fans scale)
Category rank#33,711
Street price$19
Power4 W
Performance per dollar24.05
Released2025

Specifications

BrandZephyra
ModelZephyra FN-3657 Pro
Size140 × 140 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-4852 Ti 140mm PWM Case Fan (3-Pack)238$9Compare
Caldera FN-7687 Plus 120mm PWM Case Fan (3-Pack)580$19Compare
Teralux FN-2714 Ti 120mm PWM ARGB Case Fan (3-Pack)958$29Compare
Teralux FN-1976 Core 120mm PWM Case Fan775$29Compare
Teralux FN-8647 SE 140mm PWM Case Fan421$19Compare
Brontix FN-6545 Ultra 120mm PWM ARGB Case Fan847$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Zephyra FN-3657 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/772420 (accessed 2026-10-20).