are these silent or the standard howling?

They aren’t silent but they are at least 90% quieter than the standard screamers. A point to note is that on the servers I've used these the cpu temps can be around 10-12c hotter than using the screamers so watch out for that. They move significantly less air.

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ARCTIC S4028-15K - 40x40x28mm Server Fan 1400-15000RPM PWM Regulation 4-pin Connector 12V DC Rack Cooling Fan - Black

Product ID: 435398172

Details

Brand
ARCTIC
Cooling method
Air
Power connector type
4-Pin
Product dimensions
40L x 28W x
Voltage
12 Volts

💨32.67 m³/h airflow

⚙️15000 RPM max speed

🛡️Dual ball bearings durability

€ 78.44

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Description

💨 Cool smarter, not harder — dominate your system’s heat game!

BUILT TO LAST - Dual ball bearings ensure long-lasting durability and resistance to heat and dust
POWERFUL AIRFLOW - Delivers up to 32.67 m³/h to keep your system chill under pressure
PLUG PLAY FLEXIBILITY - Standard 4-pin connector with backward compatibility for 2-pin and 3-pin headers
UNMATCHED SPEED CONTROL - PWM and voltage regulation for precise cooling performance
VERSATILE COMPATIBILITY - Fits 1U server cases, routers, NAS, Mini PCs, and more with a flexible 40 cm cable

The ARCTIC S4028-15K is a high-performance 40x40x28 mm fan featuring an impressive 15000 RPM max speed and 32.67 m³/h airflow. Equipped with durable dual ball bearings and PWM control, it offers precise, reliable cooling for compact server cases, routers, NAS devices, and more. Its versatile 4-pin connector and long cable provide flexible installation options, making it a top-tier choice for professionals demanding efficient thermal management.

Specifications

ASIN	B09SB3Z6ND
Air Flow Capacity	32.67 Cubic Meters Per Hour
Best Sellers Rank	#81,231 in Computers ( See Top 100 in Computers ) #653 in Computer Case Fans
Brand Name	ARCTIC
Compatible Devices	Printer, Server
Cooling Method	Air
Customer Reviews	4.6 4.6 out of 5 stars (60)
Item Dimensions L x W x H	40L x 28W x 40H millimeters
Manufacturer	ARCTIC
Material Type	Plastic
Maximum Rotational Speed	15000 RPM
Model	ACFAN00264A
Noise Level	35 Decibels
Number of Items	1
Number of Packs	1
Part Number	ACFAN00264A
Power Connector Type	4-Pin
UPC	840033401616
Unit Count	1.0 Count
Voltage	12 Volts

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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€ 78.44

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Fantastic and great service. Shipping was faster than expected.

1 week ago

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