Hardware Spec Index

Zephyra FN-3931 Core 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3931-CORE · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index587 (Case Fans scale)
Category rank#15,581
Street price$19
Power3 W
Performance per dollar30.89
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3931 Core
Size120 × 120 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3931 Core 120mm PWM Case Fan”, https://vextor7.com/item/85536194 (accessed 2026-10-21).