---
product_id: 426944692
title: "S4028-15K"
brand: "arctic"
price: "164 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Arctic"
url: https://www.desertcart.ro/products/426944692-s4028-15k
store_origin: RO
region: Romania
---

# 32.67 m³/h airflow PWM speed control 15000 RPM max speed S4028-15K

**Brand:** arctic
**Price:** 164 Lei
**Availability:** ✅ In Stock

## Summary

> 💨 Cool your tech like a pro — silence and power in perfect harmony!

## Quick Answers

- **What is this?** S4028-15K by arctic
- **How much does it cost?** 164 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/426944692-s4028-15k)

## Best For

- arctic enthusiasts

## Why This Product

- Trusted arctic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision PWM Control:** Fine-tune fan speed effortlessly to balance silence and cooling efficiency.
- • **Unmatched Cooling Power:** Max 15,000 RPM delivers industrial-grade airflow for peak performance.
- • **Versatile Compatibility:** Plug-and-play with 4-pin connectors, adaptable to 2- or 3-pin headers for ultimate flexibility.
- • **Compact 40x40x28 mm Design:** Fits perfectly in tight 1U server racks and specialized devices without compromise.
- • **Dual Ball Bearing Durability:** Engineered for continuous operation with superior resistance to heat and dust.

## Overview

The ARCTIC S4028-15K is a high-performance 40x40x28 mm server fan featuring a robust dual ball bearing design for enhanced durability. It offers an impressive speed range from 1,400 to 15,000 RPM, regulated via PWM for precise airflow control up to 32.67 m³/h and static pressure of 26.5 mmH₂O. Designed for 1U server cases and compact electronics, it ensures reliable, quiet cooling with a flexible 4-pin connector and a 400 mm cable, backed by a 6-year warranty.

## Description

Product description Designed for continuous operation The impeller of the S4028-15K is held in place by two ball bearings and is therefore particularly durable and less sensitive to external influences such as heat and dust. Full control with a wide speed range The S4028-15K has a very wide speed range that can be regulated via PWM and voltage. With its 15000 rpm max, it offers a high cooling capacity at a relatively low noise. High airflow and static pressure With a static pressure of 26.5 mmH₂O and a maximum airflow of 32.67 m³/h, the S4028-15K is a true all-rounder and is suitable as both a radiator and case fan. Wide range of applications The S4028-15K fits into 1U server cases and can serve as a replacement fan for routers, switches and NAS. It can also be used for other products such as DVRs, mini PCs, HTPCs, hard drive enclosures and 3D printers. Technical data Performance Fan Speed: 1400–15000 rpm Airflow: 19.23 cfm | 32.67 m³/h Speed Control: Pulse Width Modulation – PWM Static Pressure: 26.5 mmH₂O Electric Characteristics Starting Voltage: 4.5 V Current | Voltage: 0.47 A | 12.0 V DC Cable Length: 400 mm Fan Fan Frame: Standard Connector: 2510 4-Pin Fan-Connector Fan Bearing: Dual Ball Bearing Operating Ambient Temperature: 0–40 °C Size & Weight Length: 40 mm Width: 40 mm Height: 28 mm Weight: 42 g

Review: Five-Star Fans That I Removed From My System - I picked up one of the 6,000rpm variants of these fans to aim at the 12VHPWR connector on my RTX 5090—you know, just to be safe. I even 3D printed a little right-angle duct adapter to funnel air down over the connector itself. Ultimately, I ended up removing it from the system because I found the noise output unacceptable, even at very low operating speeds. ➤ The Challenge with 40mm Fans 40mm fans can be tricky with noise. Twenty to thirty years ago, 40x10mm was a common size on chipsets and video cards, and I've had quite a few fans in that form factor that were essentially inaudible when installed in a case. I've also had other 40mm fans—like these Arctics—that produce specific tones that pierce through just about anything you mount them to or in. In terms of quantitative noise levels, these are very quiet fans for what they are. I have some 40mm Sanyo Denkis on a 2.5" drive cage that max out at about 13,000rpm and are audible across the house at 8,000rpm; these Arctics are nothing like that. Qualitatively though, the noise these produce is specifically irritating to me. I can sit next to the server with those Sanyo Denkis screaming away and after a few minutes stop noticing them. A cynic might point out that this is because after a few minutes next to that server, I've gone deaf, but this is neither here nor there. By contrast, the single Arctic I had on the 5090, running at ~2,000rpm, was far more irritating in spite of being far quieter. It was *just* audible as a faint ticking buzz over the rest of the system. And unfortunately, at ~2,000rpm, it didn't move enough air to make a difference in my use case, so it was just added irritation with no benefit. It's not that they're loud—it's that the specific tone they make, even in the context of what they are, is particularly grating to me. But this is intrinsically subjective, so your experience may differ. ➤ Use Case Matters For their intended use case (in a 1U server), these are extremely quiet and highly power efficient. For use in a desktop, they become meaningfully audible far before they move a meaningful amount of air. As far as 40mm fans go, these are outstanding. But unless you have a specific need for a 40mm fan, you would generally be better served finding an alternative way to accomplish whatever task you're considering these for. ➤ Bottom Line I can't and won't knock any stars off the fan itself—these earn the full five stars easily. They're power-efficient, quiet for what they are, dual ball bearing, exceptionally well-built, and Arctic provides actual performance data including P/Q curves and PWM curves. Both are generally absent with consumer-grade fans and are hugely useful if you know how to read them, signaling that Arctic is serious about selling these for actual industrial/server use. For the home/enthusiast/desktop user, these are clearly audible below 2,000rpm, and probably outright unacceptable over 3,000rpm. If you have a specific need for them, I'd recommend them very highly. On balance these are likely the best 40mm fans on the market. At the same time, if you can accomplish your goal with a larger fan, you'd probably be happier going that route.
Review: Works well, quiet, handy for weird GPUs - I'm using these to cool a CMP 100-210 GPU with a 3D printed attachment. Long story short - at 100%, these fans are still quite quiet - and they move a lot of air. Not nearly as loud as a typical 40mm server fan. I'll probably go with these when I need another 40mm fan. It's good stuff.

## Features

- TheS4028-15K's impeller is held in place by two ball bearings, making it both particularly durable and less sensitive to external influences like heat and dust
- The S4028-15K has a particularly wide speed range that can be regulated via PWM and voltage. With its 15000 max RPM it is one of the strongest 12 V fans with a 40 mm diameter
- With a static pressure of 26.5 mm/H2O and a maximum airflow of 32.67 m³/h, the S4028-15K is a true all-rounder and is suitable as both a radiator and case fan
- The S4028-15K fits in 1U server cases, as a replacement fan for routers, switches and NAS. It can also be used for other products such as DVRs, Mini PCs, HTPCs, hard disk enclosures and 3D printers
- The fan has a standard 4-pin fan connector and can also be connected and controlled on 2-pin or 3-pin headers, while the 40 cm cable allows enough flexibility in positioning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SB3Z6ND |
| Air Flow Capacity | 264 Cubic Feet Per Minute |
| Best Sellers Rank | #144 in Computer Case Fans |
| Brand | ARCTIC |
| Brand Name | ARCTIC |
| Compatible Devices | Printer, Server |
| Cooling Method | Air |
| Customer Reviews | 4.4 out of 5 stars 149 Reviews |
| 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 Decibels |
| Number of Items | 1 |
| Part Number | ACFAN00264A |
| Power Connector Type | 2510 4-Pin Fan-Connector |
| Product Dimensions | 1.57"L x 1.1"W x 1.57"H |
| UPC | 840033401616 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 6 years |

## Product Details

- **Air Flow Capacity:** 264 Cubic Feet Per Minute
- **Brand:** ARCTIC
- **Compatible Devices:** Printer, Server
- **Cooling Method:** Air
- **Material:** Plastic
- **Maximum Rotational Speed:** 15000 RPM
- **Noise Level:** 35 Decibels
- **Power Connector Type:** 2510 4-Pin Fan-Connector
- **Product Dimensions:** 1.57"L x 1.1"W x 1.57"H
- **Voltage:** 12 Volts

## Images

![S4028-15K - Image 1](https://m.media-amazon.com/images/I/51tHzOmapnL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: are these silent or the standard howling?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five-Star Fans That I Removed From My System
*by S***S on October 13, 2025*

I picked up one of the 6,000rpm variants of these fans to aim at the 12VHPWR connector on my RTX 5090—you know, just to be safe. I even 3D printed a little right-angle duct adapter to funnel air down over the connector itself. Ultimately, I ended up removing it from the system because I found the noise output unacceptable, even at very low operating speeds. ➤ The Challenge with 40mm Fans 40mm fans can be tricky with noise. Twenty to thirty years ago, 40x10mm was a common size on chipsets and video cards, and I've had quite a few fans in that form factor that were essentially inaudible when installed in a case. I've also had other 40mm fans—like these Arctics—that produce specific tones that pierce through just about anything you mount them to or in. In terms of quantitative noise levels, these are very quiet fans for what they are. I have some 40mm Sanyo Denkis on a 2.5" drive cage that max out at about 13,000rpm and are audible across the house at 8,000rpm; these Arctics are nothing like that. Qualitatively though, the noise these produce is specifically irritating to me. I can sit next to the server with those Sanyo Denkis screaming away and after a few minutes stop noticing them. A cynic might point out that this is because after a few minutes next to that server, I've gone deaf, but this is neither here nor there. By contrast, the single Arctic I had on the 5090, running at ~2,000rpm, was far more irritating in spite of being far quieter. It was *just* audible as a faint ticking buzz over the rest of the system. And unfortunately, at ~2,000rpm, it didn't move enough air to make a difference in my use case, so it was just added irritation with no benefit. It's not that they're loud—it's that the specific tone they make, even in the context of what they are, is particularly grating to me. But this is intrinsically subjective, so your experience may differ. ➤ Use Case Matters For their intended use case (in a 1U server), these are extremely quiet and highly power efficient. For use in a desktop, they become meaningfully audible far before they move a meaningful amount of air. As far as 40mm fans go, these are outstanding. But unless you have a specific need for a 40mm fan, you would generally be better served finding an alternative way to accomplish whatever task you're considering these for. ➤ Bottom Line I can't and won't knock any stars off the fan itself—these earn the full five stars easily. They're power-efficient, quiet for what they are, dual ball bearing, exceptionally well-built, and Arctic provides actual performance data including P/Q curves and PWM curves. Both are generally absent with consumer-grade fans and are hugely useful if you know how to read them, signaling that Arctic is serious about selling these for actual industrial/server use. For the home/enthusiast/desktop user, these are clearly audible below 2,000rpm, and probably outright unacceptable over 3,000rpm. If you have a specific need for them, I'd recommend them very highly. On balance these are likely the best 40mm fans on the market. At the same time, if you can accomplish your goal with a larger fan, you'd probably be happier going that route.

### ⭐⭐⭐⭐⭐ Works well, quiet, handy for weird GPUs
*by Z***A on May 14, 2026*

I'm using these to cool a CMP 100-210 GPU with a 3D printed attachment. Long story short - at 100%, these fans are still quite quiet - and they move a lot of air. Not nearly as loud as a typical 40mm server fan. I'll probably go with these when I need another 40mm fan. It's good stuff.

### ⭐⭐⭐⭐⭐ Solid. Looks like decent quality. Time will tell
*by J***S on April 19, 2026*

Works great, not too loud

## Frequently Bought Together

- ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
- Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-07-15*