Hardware Spec Index

Zephyra FN-4091 Ultra 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN4091-ULTRA · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index813 (Case Fans scale)
Category rank#45,731
Street price$19
Power4 W
Performance per dollar42.79
Released2022

Specifications

BrandZephyra
ModelZephyra FN-4091 Ultra
Size120 × 120 × 25 mm
Speed300–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise30 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4091 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/3533946 (accessed 2026-10-19).