Hardware Spec Index

Zephyra FN-7921 Prime 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN7921-PRIME · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index357 (Case Fans scale)
Category rank#34,116
Street price$19
Power3 W
Performance per dollar18.79
Released2021

Specifications

BrandZephyra
ModelZephyra FN-7921 Prime
Size120 × 120 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise36 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-7921 Prime 120mm PWM Case Fan”, https://vextor7.com/item/6503060 (accessed 2026-10-25).