Hardware Spec Index

Zephyra FN-3643 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3643-ULTRA · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index254 (Case Fans scale)
Category rank#33,870
Street price$9
Power3 W
Performance per dollar28.22
Released2024

Specifications

BrandZephyra
ModelZephyra FN-3643 Ultra
Size120 × 120 × 25 mm
Speed400–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3643 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/8326732 (accessed 2026-10-23).