Hardware Spec Index

Zephyra FN-3631 Ultra 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN3631-ULTRA · Released 2023 · Updated 2026-10-23

Key facts

Benchmark index1,170 (Case Fans scale)
Category rank#8,791
Street price$49
Power3 W
Performance per dollar23.88
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3631 Ultra
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise27 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3631 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/71671441 (accessed 2026-10-23).