Noctua B9 redux-1600 PWM vs Noctua R8 redux-1800

A side-by-side spec comparison of the Noctua B9 redux-1600 PWM and the Noctua R8 redux-1800. We line up every specification and score the ones that matter most in this category — weighted, not a raw count of specs won — to reach an overall verdict so you can decide which case fan is right for your build.

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Side-by-side specification comparison of Noctua B9 redux-1600 PWM and Noctua R8 redux-1800.
Specification	Noctua B9 redux-1600 PWM $19.70 Newegg price as of Oct 22, 12:00 UTC Buy on Newegg	Noctua R8 redux-1800 $13.95 Newegg price as of Oct 22, 17:02 UTC Buy on Newegg
RGB	No	No
RPM	{"max":350,"min":350}	{"max":1800,"min":1800}
Size	92"	80"
Noise Level	17.6 dBA	17.1 dBA
Airflow (CFM)	37.85 CFM	31.37 CFM
Quantity	1	1

Too close to call — these products trade blows on the specs that matter.

Noctua B9 redux-1600 PWM

performance point

Noctua R8 redux-1800

performance point

Winner is scored by weighting the specs that matter most in this category (not a raw count of specs won).

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