Hardware Spec Index

Zephyra FN-3973 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3973-ULTRA · Released 2026 · Updated 2026-10-21

Key facts

Benchmark index423 (Case Fans scale)
Category rank#23,482
Street price$19
Power4 W
Performance per dollar22.26
Released2026

Specifications

BrandZephyra
ModelZephyra FN-3973 Ultra
Size120 × 120 × 25 mm
Speed400–2,700 RPM (PWM)
Airflow91.8 CFM
Static pressure2.97 mmH₂O
Noise25 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3973 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/1123595 (accessed 2026-10-21).