Hardware Spec Index

Zephyra FN-3921 Plus 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3921-PLUS · Released 2024 · Updated 2026-10-21

Key facts

Benchmark index537 (Case Fans scale)
Category rank#19,361
Street price$19
Power3 W
Performance per dollar28.26
Released2024

Specifications

BrandZephyra
ModelZephyra FN-3921 Plus
Size120 × 120 × 25 mm
Speed300–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise36 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3921 Plus 120mm PWM Case Fan”, https://vextor7.com/item/845958 (accessed 2026-10-21).