Hardware Spec Index

Zephyra FN-4640 Core 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN4640-CORE · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index752 (Case Fans scale)
Category rank#32,960
Street price$19
Power3 W
Performance per dollar39.58
Released2019

Specifications

BrandZephyra
ModelZephyra FN-4640 Core
Size140 × 140 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4640 Core 140mm PWM Case Fan”, https://vextor7.com/item/570375 (accessed 2026-10-19).