Noctua NF-A4x10 vs NF-A20 FLX Case Fan Comparison

Noctua NF-A4x10 and Noctua NF-A20 FLX 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 and Fan RPM.

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Noctua NF-A4x10	Noctua NF-A20 FLX
Prices (Change region) In Stock $15.95 Last updated 40 minutes ago. In Stock Free shipping $21.90	Prices (Change region) In Stock $35.95 Last updated 43 minutes ago. In Stock + $11.20 Shipping $35.95
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Brand Noctua	Brand Noctua
Model NF-A4x10	Model NF-A20 FLX
Release Date 📅 January 2014	Release Date -
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (188 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 200 mm
Color Brown	Color Brown
Airflow 3.9 - 4.8 CFM	Airflow 59.33 - 86.46 CFM
Airflow Direction Regular	Airflow Direction Regular
Fan RPM 3700 - 4500 RPM	Fan RPM 550 - 800 RPM
Bearing Type SSO2	Bearing Type -
Fans Quantity 1	Fans Quantity 1
LED Color None	LED Color None
PWM Connector No	PWM Connector No
Fan controller included No	Fan controller included No