Noctua A4x10 vs Noctua B9 redux-1600

A side-by-side spec comparison of the Noctua A4x10 and the Noctua B9 redux-1600. 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 A4x10 and Noctua B9 redux-1600.
Specification	Noctua A4x10 $15.95 Winner Buy on Newegg	Noctua B9 redux-1600 $14.95 Buy on Newegg
RGB	No	No
RPM	{"max":3700,"min":3700}	{"max":350,"min":350}
Size	40"	92"
Noise Level	12.9 dBA	17.6 dBA
Airflow (CFM)	3.88 CFM	37.85 CFM
Quantity	1	1

Noctua A4x10

spec won

Noctua B9 redux-1600

spec won

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