Hardware Spec Index

Zephyra FN-4021 Ultra 120mm PWM ARGB Case Fan

Case Fans · Zephyra · SKU FN4021-ULTRA · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index896 (Case Fans scale)
Category rank#3,080
Street price$29
Power3 W
Performance per dollar30.90
Released2022

Specifications

BrandZephyra
ModelZephyra FN-4021 Ultra
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise32 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-4021 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/1002183 (accessed 2026-10-19).