Hardware Spec Index

Zephyra FN-4638 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4638-ULTRA · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index219 (Case Fans scale)
Category rank#21,003
Street price$9
Power3 W
Performance per dollar24.33
Released2022

Specifications

BrandZephyra
ModelZephyra FN-4638 Ultra
Size120 × 120 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4638 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/2282913 (accessed 2026-10-20).