Hardware Spec Index

Zephyra FN-3921 XT 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3921-XT · Released 2025 · Updated 2026-10-18

Key facts

Benchmark index646 (Case Fans scale)
Category rank#41,602
Street price$19
Power4 W
Performance per dollar34.00
Released2025

Specifications

BrandZephyra
ModelZephyra FN-3921 XT
Size120 × 120 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise30 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3921 XT 120mm PWM Case Fan”, https://vextor7.com/item/11229 (accessed 2026-10-18).