Hardware Spec Index

Zephyra FN-4939 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4939-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index466 (Case Fans scale)
Category rank#25,522
Street price$19
Power3 W
Performance per dollar24.53
Released2020

Specifications

BrandZephyra
ModelZephyra FN-4939 Ultra
Size120 × 120 × 25 mm
Speed400–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4939 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/30033479 (accessed 2026-10-23).