Hardware Spec Index

Zephyra FN-4931 Prime 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4931-PRIME · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index642 (Case Fans scale)
Category rank#1,369
Street price$19
Power3 W
Performance per dollar33.79
Released2019

Specifications

BrandZephyra
ModelZephyra FN-4931 Prime
Size120 × 120 × 25 mm
Speed500–2,300 RPM (PWM)
Airflow78.2 CFM
Static pressure2.53 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4931 Prime 120mm PWM Case Fan”, https://vextor7.com/item/18589366 (accessed 2026-10-22).