Hardware Spec Index

Zephyra FN-6721 Ultra 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN6721-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index635 (Case Fans scale)
Category rank#48,180
Street price$19
Power4 W
Performance per dollar33.42
Released2021

Specifications

BrandZephyra
ModelZephyra FN-6721 Ultra
Size140 × 140 × 25 mm
Speed500–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-6721 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/31665586 (accessed 2026-10-24).