Hardware Spec Index

Zephyra FN-3917 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3917-ULTRA · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index640 (Case Fans scale)
Category rank#30,393
Street price$19
Power4 W
Performance per dollar33.68
Released2026

Specifications

BrandZephyra
ModelZephyra FN-3917 Ultra
Size120 × 120 × 25 mm
Speed200–3,000 RPM (PWM)
Airflow102.0 CFM
Static pressure3.30 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3917 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/43312665 (accessed 2026-10-19).