Hardware Spec Index

Zephyra FN-4577 Pro 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4577-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index309 (Case Fans scale)
Category rank#5,948
Street price$9
Power4 W
Performance per dollar34.33
Released2021

Specifications

BrandZephyra
ModelZephyra FN-4577 Pro
Size120 × 120 × 25 mm
Speed300–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4577 Pro 120mm PWM Case Fan”, https://vextor7.com/item/6413396 (accessed 2026-10-22).