Hardware Spec Index

Zephyra FN-4645 Pro 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN4645-PRO · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index355 (Case Fans scale)
Category rank#29,535
Street price$9
Power3 W
Performance per dollar39.44
Released2021

Specifications

BrandZephyra
ModelZephyra FN-4645 Pro
Size140 × 140 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise33 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4645 Pro 140mm PWM Case Fan”, https://vextor7.com/item/21310376 (accessed 2026-10-20).