Hardware Spec Index

Zephyra FN-3991 Ti 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN3991-TI · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index813 (Case Fans scale)
Category rank#35,780
Street price$29
Power3 W
Performance per dollar28.03
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3991 Ti
Size120 × 120 × 25 mm
Speed500–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3991 Ti 120mm PWM ARGB Case Fan”, https://vextor7.com/item/99867316 (accessed 2026-10-20).