Hardware Spec Index

Zephyra FN-5991 Prime 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN5991-PRIME · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index1,008 (Case Fans scale)
Category rank#33,700
Street price$39
Power4 W
Performance per dollar25.85
Released2020

Specifications

BrandZephyra
ModelZephyra FN-5991 Prime
Size120 × 120 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-5991 Prime 120mm PWM ARGB Case Fan”, https://vextor7.com/item/117146 (accessed 2026-10-20).