Hardware Spec Index

Zephyra FN-3644 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3644-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index413 (Case Fans scale)
Category rank#46,676
Street price$9
Power4 W
Performance per dollar45.89
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3644 Ultra
Size120 × 120 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3644 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/3522503 (accessed 2026-10-21).