--- product_id: 534456065 title: "ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black" brand: "arctic" price: "346.84 DT" currency: TND in_stock: true reviews_count: 5 category: "Arctic" url: https://www.desertcart.tn/products/534456065-arctic-s4028-6k-40x40x28-mm-server-fan-250-6000-rpm store_origin: TN region: Tunisia --- # 12.06 m³/h airflow 6000 RPM max speed Dual ball bearing durability ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black **Brand:** arctic **Price:** 346.84 DT **Availability:** ✅ In Stock ## Summary > 💨 Power your server’s cool edge with Arctic’s stealthy airflow champion! ## Quick Answers - **What is this?** ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black by arctic - **How much does it cost?** 346.84 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/534456065-arctic-s4028-6k-40x40x28-mm-server-fan-250-6000-rpm) ## 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 - • **Compact Yet Mighty:** 40x40x28 mm size fits tight 1U server spaces without compromising airflow or pressure. - • **Precision PWM Control:** Seamlessly adjust fan speed from whisper-quiet to powerful cooling with 4-pin PWM regulation. - • **Versatile Compatibility:** Works flawlessly with routers, NAS, mini PCs, 3D printers, and more—flexible 40 cm cable included. - • **Balanced Cooling & Noise:** Optimized for a perfect harmony of airflow (12.06 m³/h) and low noise at up to 6000 RPM. - • **Engineered for Endurance:** Dual ball bearings ensure long-lasting performance even under heat and dust stress. ## Overview The ARCTIC S4028-6K is a high-performance 40mm server fan featuring a wide 250–6000 RPM speed range controlled via PWM, dual ball bearings for enhanced durability, and a robust airflow of 12.06 m³/h with 4.2 mm/H2O static pressure. Designed for compact 1U server cases and versatile enough for NAS, routers, and mini PCs, it delivers efficient, quiet cooling with a flexible 4-pin connector and 40 cm cable for easy installation. ## Description ARCTIC, a leading manufacturer of low-noise PC coolers and components, initiated and continues to shape the trend towards quiet cooling systems. In addition to an extensive range of CPU/GPU coolers and fans, ARCTIC produces high-quality monitor arms and wall brackets as well as practical tech equipment. The company, headed by founder Magnus Huber, has offices in Germany, Hong Kong and the USA. It has won over PC enthusiasts in more than 45 countries with innovative and user-friendly products that are high quality and sold at fair prices. For almost 20 years, ARCTIC has stood for comfortable computing, stellar service and personal support. 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: Exelente performance - El performance de los ventiladores es muy bueno definitivamente cumplen con su función, tanto para servidores, NAS o para agregar un extra de ventilación a los headsync de la tarjeta madre funcionan a la perfección, el flujo de aire es bastante bueno y con bajo nivel de ruido. en comparación con la competencia NcTua, creo que valen cada peso de lo que cuesta el paquete de 5 es excelente y son PWM ## Features - The S4028-6K's impeller is held in place by two ball bearings, making it both especially durable as well as less sensitive to external influences such as heat and dust - The S4028-6K has a particularly wide speed range that can be regulated via PWM and voltage. With its 6000 RPM max it offers a well-balanced ratio between cooling power and noise - With a static pressure of 4.2 mm/H2O and a maximum airflow of 12.06 m³/h, the S4028-6K is a true all-rounder and is suitable as both radiator and case fan - The S4028-6K 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 its 40 cm cable allows enough flexibility in positioning ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09S9WDKVT | | Air Flow Capacity | 185 Cubic Feet Per Minute | | Brand | ARCTIC | | Brand Name | ARCTIC | | Compatible Devices | Desktop | | Cooling Method | Air | | Country of Origin | USA | | Customer Reviews | 4.5 out of 5 stars 149 Reviews | | Manufacturer | ARCTIC | | Material Type | Plastic | | Max Rotational Speed | 6000 RPM | | Model Number | ACFAN00185A | | Number of Items | 1 | | Part Number | ACFAN00185A | | Power Connector Type | 4-Pin | | UPC | 840033401609 | | Unit Count | 1.0 Count | | Voltage | 12 Volts | | Wattage | 1.2 Watts | ## Product Details - **Brand:** ARCTIC - **Cooling Method:** Air - **Power Connector Type:** 4-Pin - **Voltage:** 12 Volts - **Wattage:** 1.2 Watts ## Images ![ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Image 1](https://m.media-amazon.com/images/I/51tHzOmapnL.jpg) ![ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Image 2](https://m.media-amazon.com/images/I/51EwZpt3xzL.jpg) ![ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Image 3](https://m.media-amazon.com/images/I/71x8fI4+ddL.jpg) ![ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Image 4](https://m.media-amazon.com/images/I/61kMQkdOqsL.jpg) ![ARCTIC S4028-6K - 40x40x28 mm Server Fan, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Image 5](https://m.media-amazon.com/images/I/71tsYPrQcwL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Exelente performance *by I***S on 4 July 2023* El performance de los ventiladores es muy bueno definitivamente cumplen con su función, tanto para servidores, NAS o para agregar un extra de ventilación a los headsync de la tarjeta madre funcionan a la perfección, el flujo de aire es bastante bueno y con bajo nivel de ruido. en comparación con la competencia NcTua, creo que valen cada peso de lo que cuesta el paquete de 5 es excelente y son PWM ### ⭐⭐⭐⭐⭐ Great fan *by J***L on 10 February 2024* I bought 2 of these fans to use in my remote control vehicles. I had to convert it to a 3 wire plug, (YouTube has a video using these fans) but they really pump the air and keeps my motors a lot cooler when bashing on my trucks. ## Frequently Bought Together - ARCTIC S4028-6K (5 Pack) - 40x40x28 mm Server Fans, 250–6000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black - Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown) - Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/534456065-arctic-s4028-6k-40x40x28-mm-server-fan-250-6000-rpm](https://www.desertcart.tn/products/534456065-arctic-s4028-6k-40x40x28-mm-server-fan-250-6000-rpm) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-15*