Hardware Spec Index

Zephyra FN-3921 Pro 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3921-PRO · Released 2025 · Updated 2026-10-22

Key facts

Benchmark index1,006 (Case Fans scale)
Category rank#23,790
Street price$29
Power4 W
Performance per dollar34.69
Released2025

Specifications

BrandZephyra
ModelZephyra FN-3921 Pro
Size120 × 120 × 25 mm
Speed300–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise28 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3921 Pro 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/8901538 (accessed 2026-10-22).