Hardware Spec Index

Zephyra FN-3988 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN3988-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index348 (Case Fans scale)
Category rank#29,403
Street price$9
Power4 W
Performance per dollar38.67
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3988 Ultra
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise35 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3988 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/7572075 (accessed 2026-10-20).