Hardware Spec Index

Zephyra FN-3991 XT 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3991-XT · Released 2023 · Updated 2026-10-23

Key facts

Benchmark index1,008 (Case Fans scale)
Category rank#24,777
Street price$39
Power3 W
Performance per dollar25.85
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3991 XT
Size120 × 120 × 25 mm
Speed400–2,400 RPM (PWM)
Airflow81.6 CFM
Static pressure2.64 mmH₂O
Noise24 dBA
BearingRifle 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 XT 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/18607293 (accessed 2026-10-23).