Hardware Spec Index

Zephyra FN-3811 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3811-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index268 (Case Fans scale)
Category rank#18,777
Street price$9
Power3 W
Performance per dollar29.78
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3811 Ultra
Size120 × 120 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise36 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3811 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/5949673 (accessed 2026-10-22).