Noctua NF-A4x20 vs NF-B9-1600 Case Fan Comparison

Noctua NF-A4x20 and Noctua NF-B9-1600 are both case fans with the same Airflow Direction (Regular), Fans Quantity (1) and LED Color (None). The main differences are in Fan Size, Airflow, Fan RPM and PWM Connector.

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Noctua NF-A4x20	Noctua NF-B9-1600
Prices (Change region) In Stock $15.95 Last updated 4 minutes ago. In Stock + $7.10 Shipping $15.95	Prices (Change region) Out of Stock + $3.00 Shipping $9.99
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Brand noctua	Brand Noctua
Model NF-A4X20 PWM	Model NF-B9-1600
Release Date -	Release Date -
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Fan Size 40 mm	Fan Size 92 mm
Color Brown	Color Brown
Airflow 4.9 - 5.5 CFM	Airflow 24.19 - 37.84 CFM
Airflow Direction Regular	Airflow Direction Regular
Fan RPM 1200 - 5000 RPM	Fan RPM 1000 - 1600 RPM
Bearing Type -	Bearing Type SSO
Fans Quantity 1	Fans Quantity 1
LED Color None	LED Color None
PWM Connector Yes	PWM Connector No
Fan controller included No	Fan controller included No