Hardware Spec Index

Zephyra FN-4991 Pro 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN4991-PRO · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index841 (Case Fans scale)
Category rank#18,886
Street price$29
Power3 W
Performance per dollar29.00
Released2020

Specifications

BrandZephyra
ModelZephyra FN-4991 Pro
Size120 × 120 × 25 mm
Speed200–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise23 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-4991 Pro 120mm PWM ARGB Case Fan”, https://vextor7.com/item/8964145 (accessed 2026-10-24).