Hardware Spec Index

Zephyra FN-3647 Ultra 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN3647-ULTRA · Released 2024 · Updated 2026-10-24

Key facts

Benchmark index875 (Case Fans scale)
Category rank#43,523
Street price$29
Power3 W
Performance per dollar30.17
Released2024

Specifications

BrandZephyra
ModelZephyra FN-3647 Ultra
Size120 × 120 × 25 mm
Speed200–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3647 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/92398788 (accessed 2026-10-24).