Hardware Spec Index

Zephyra FN-4891 Ultra 140mm PWM ARGB Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN4891-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index1,081 (Case Fans scale)
Category rank#29,763
Street price$29
Power4 W
Performance per dollar37.28
Released2023

Specifications

BrandZephyra
ModelZephyra FN-4891 Ultra
Size140 × 140 × 25 mm
Speed500–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise23 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4891 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/17812644 (accessed 2026-10-22).