Hardware Spec Index

Zephyra FN-4639 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4639-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index252 (Case Fans scale)
Category rank#14,313
Street price$9
Power3 W
Performance per dollar28.00
Released2021

Specifications

BrandZephyra
ModelZephyra FN-4639 Ultra
Size120 × 120 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4639 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/27360193 (accessed 2026-10-24).