---
product_id: 435398172
title: "S4028-15K - 40 x 40 x 28 mm Fan, 1400-15000 RPM, PWM-Controlled"
brand: "arctic"
price: "¥8085"
currency: JPY
in_stock: true
reviews_count: 5
category: "Arctic"
url: https://www.desertcart.jp/products/435398172-s4028-15k-40-x-40-x-28-mm-fan-1400
store_origin: JP
region: Japan
---

# 32.67 m³/h airflow 15000 RPM max speed Dual ball bearings durability S4028-15K - 40 x 40 x 28 mm Fan, 1400-15000 RPM, PWM-Controlled

**Brand:** arctic
**Price:** ¥8085
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** S4028-15K - 40 x 40 x 28 mm Fan, 1400-15000 RPM, PWM-Controlled by arctic
- **How much does it cost?** ¥8085 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/435398172-s4028-15k-40-x-40-x-28-mm-fan-1400)

## 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

- • **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

## Overview

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.

## Description

ARCTIC offers innovative solutions incessantly - changing impossible user requirements into new. Always focused on our customers, ARCTIC is devoted to deliver excellence through a strong dedication and a high sense of commitment. In light of the ever-changing consumer landscapes, we aspire to continue to expand and diversify our products and solutions. From computer cooling and peripherals to audio and digital home entertainment, we strive to enrich people's lives by creating innovative, user friendly yet affordable products with a great value of benefit. For us value for money is a key factor - a constant our customers rely on.

Review: Super refroidissement! - Parfait! Mes tesla t4 restent sous la barre des 55 degrés en étant chargées à 100% d'utilisation.
Review: A bit loud, but performant - These fans are a bit louder than I would have hoped for, but they're still quieter than what they replaced. I did some math before buying and determined that the 6K variant would not be enough for my use case on a Tesla P40. That was correct, as these fans have to be at 11-12K RPM to keep temperatures under control. Under a more moderate load, they can run at 9K or less to keep it cool. Overall, if you're trying to cool a 250W TDP or so GPU like a Tesla P40, these work fairly well for the price.

## 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 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
- 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 | 32.67 Cubic Meters Per Hour |
| Best Sellers Rank | #67,732 in Computers ( See Top 100 in Computers ) #547 in Computer Case Fans |
| Brand | ARCTIC |
| Brand Name | ARCTIC |
| Compatible Devices | Printer, Server |
| Compatible devices | Printer, Server |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.6 out of 5 stars 119 Reviews |
| 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 |
| Power connector type | 4-Pin |
| Product dimensions | 40L x 28W x 40H millimeters |
| UPC | 840033401616 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |

## Product Details

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

## Images

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

### ⭐⭐⭐⭐⭐ Super refroidissement!
*by C***N on 7 August 2026*

Parfait! Mes tesla t4 restent sous la barre des 55 degrés en étant chargées à 100% d'utilisation.

### ⭐⭐⭐⭐⭐ A bit loud, but performant
*by S***L on 14 January 2026*

These fans are a bit louder than I would have hoped for, but they're still quieter than what they replaced. I did some math before buying and determined that the 6K variant would not be enough for my use case on a Tesla P40. That was correct, as these fans have to be at 11-12K RPM to keep temperatures under control. Under a more moderate load, they can run at 9K or less to keep it cool. Overall, if you're trying to cool a 250W TDP or so GPU like a Tesla P40, these work fairly well for the price.

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

## 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 Japan*
*Store origin: JP*
*Last updated: 2026-09-15*