Hardware Spec Index

Zephyra FN-3931 Prime 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3931-PRIME · Released 2020 · Updated 2026-10-26

Key facts

Benchmark index1,400 (Case Fans scale)
Category rank#46,700
Street price$49
Power3 W
Performance per dollar28.57
Released2020

Specifications

BrandZephyra
ModelZephyra FN-3931 Prime
Size120 × 120 × 25 mm
Speed500–2,400 RPM (PWM)
Airflow81.6 CFM
Static pressure2.64 mmH₂O
Noise32 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3931 Prime 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/7150549 (accessed 2026-10-26).