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 - 40 x 40 x 28 mm Fan, 1400-15000 RPM, PWM-Controlled

ARCTIC S4028-15K - 40 x 40 x 28 mm Fan, 1400-15000 RPM, PWM-Controlled

Product ID: 426944692

Details

Air Flow Capacity
264 cfm
Brand
ARCTIC
Compatible Devices
Printer Server
Cooling Method
Air
Material
Plastic
Maximum Rotational Speed
15000 rpm

💨32.67 m³/h airflow

⚙️15000 RPM max speed

🛡️Dual ball bearings durability

$20.90

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Description

💨 Cool smarter, not harder — unleash Arctic’s turbocharged airflow!

BUILT TO LAST - Dual ball bearing design ensures long-lasting durability and resistance to heat and dust.
UNMATCHED SPEED CONTROL - PWM and voltage regulation from 1400 to 15000 RPM for precision cooling.
VERSATILE COMPATIBILITY - Fits 1U server cases, routers, NAS, Mini PCs, 3D printers, and more with a flexible 40 cm cable.
WHISPER QUIET OPERATION - Operates at a low noise level of 35 dB, keeping your workspace calm and focused.
POWERFUL AIRFLOW PERFORMANCE - Delivers up to 32.67 m³/h with 26.5 mmH₂O static pressure—perfect for radiators and cases.

The ARCTIC S4028-15K is a compact yet powerhouse 40x40x28 mm fan featuring an ultra-wide 1400-15000 RPM range controlled via PWM. Its dual ball bearing system guarantees durability and resilience against heat and dust, while delivering a robust airflow of 32.67 m³/h and static pressure of 26.5 mmH₂O. Designed for versatile use in servers, routers, NAS, and compact PCs, it combines high performance with whisper-quiet operation and flexible connectivity, backed by a 6-year warranty.

Specifications

ASIN	B09SB3Z6ND
Air Flow Capacity	264 cfm
Best Sellers Rank	#79 in Computer Case Fans
Brand Name	ARCTIC
Compatible Devices	Printer, Server
Cooling Method	Air
Customer Reviews	4.5 4.5 out of 5 stars (59)
Item Dimensions L x W x H	1.57"L x 1.1"W x 1.57"H
Manufacturer	ARCTIC
Material Type	Plastic
Maximum Rotational Speed	15000 rpm
Model	ACFAN00264A
Noise Level	35 db
Number of Items	1
Part Number	ACFAN00264A
Power Connector Type	2510 4-Pin Fan-Connector
UPC	840033401616
Unit Count	1 Count
Voltage	12 volts
Warranty Description	6 years

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$20.90

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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