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Noctua A12x25 PWM vs Noctua A12x25 ULN

A side-by-side spec comparison of the Noctua A12x25 PWM and the Noctua A12x25 ULN. We line up every specification, highlight the winner of each, and tally an overall verdict so you can decide which case fan is right for your build.

Side-by-side specification comparison of Noctua A12x25 PWM and Noctua A12x25 ULN.
Specification
RGBNoNo
RPM{"max":450,"min":450}{"max":900,"min":900}
Size120"120"
Noise Level18.8 dBA7.6 dBA
Airflow (CFM)49.73 CFM23.19 CFM
Quantity11

Noctua A12x25 PWM

1

spec won

Noctua A12x25 ULN

1

spec won

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