GMKtec
GMKtec M5S Gaming PC Mini Desktop Computer Ryzen 5400U 16GB DDR4 512GB
Highlights
- MINI PC FOR OFFICE BUSINESS - Powered by the AMD Ryzen 3 5400U processor—built on TSMC's advanced 7nm process—this mini PC delivers a guaranteed 2.6GHz base clock and Turbo boost up to 4.0GHz with 8 threads via SMT/Hyperthreading, effortlessly handling daily office tasks like spreadsheets, presentations, video conferencing, and multitasking across dozens of browser tabs. Meanwhile, its ultra-low power architecture significantly reduces electricity consumption, helping your business save on energy costs month after month while running cool and silent—perfect for all-day operations in any office environment.
- GAMING PC MINI DESKTOP - Equipped with AMD Radeon Graphics featuring 6 cores running at 1600MHz, this mini PC delivers surprisingly capable visual performance for lightweight and retro gaming—enjoy classic console emulations via Batocera, indie titles, and older Steam favorites without needing a bulky gaming rig.
- 16GB DDR4 RAM & 512GB PCIe SSD - Installed with DDR4 16GB RAM SO-DIMM (1x16GB), the Nucbox M5S mini pc support expansion to 128GB RAM. Featured with 512GB M.2 2280 PCIe 3.0 SSD, support dual slot expansion to PCIe 4.0 8TB SSD. (Upgrades not included)
- DUAL NIC LAN 2.5G RJ45 - Fast Network Speeds: Enjoy up to 2500Mbps data transmission speed without worrying about lagging. Ideal for working, gaming, and surfing the internet. Great for Untangle, Pfsense or as a server office PC.
- TRIPLE 4K DISPLAY - Unlock unparalleled productivity with support for three simultaneous displays, including a stunning 8K@60Hz via USB4, plus 4K@60Hz through both HDMI 2.0 and DisplayPort, transforming your workspace into a command center for multitasking and immersive entertainment.
- FAST INTERNET WiFi 6 + BT5.2 CONNECTION - Experience next-generation WiFi 6 for ultra-fast, low-latency internet on 2.5G/5G bands, paired with Bluetooth 5.2 for instant peripheral connections. BT5.2 allowing you more quickly to connect other wireless devices (headset, mouse, keyboard, etc.) Interface features 2*USB3.2 (Gen2) ports, 2*USB2.0 ports, 1*HDMI 2.0 port(4K@60Hz), 1*DP Port, 1*USB Type-C port ((USB 3.2 Gen2 10Gbps，PD 100W, Video 4K@60Hz)),1*Audio 3.5mm (HP&MIC), 1*DC Power Port.
- GMKTEC WARRANTY - GMKtec offers a 1-year limited warranty for each mini PC, starting from the date of the purchase. All defects due to design and workmanship are covered. With a professional after sales team always ready to attend to your needs, you can simply relax and enjoy your mini PC.
Why You'll Love It
- Run spreadsheets, video calls, and dozens of tabs without slowdowns on a 4.0GHz processor
- Connect up to three monitors at once, including one at 8K resolution via USB4
- 2.5Gb wired networking keeps lag out of the picture for work, gaming, or server use
- WiFi 6 and Bluetooth 5.2 mean fast wireless for peripherals and internet without extra adapters
- Storage and RAM slots let you expand to 8TB SSD and up to 128GB RAM down the road
- Compact form factor handles light gaming and classic emulation without a full-size desktop
Pros
- +Triple-display support including 8K via USB4
- +Dual 2.5Gb LAN ports for fast wired networking
- +RAM and SSD slots open for future upgrades
- +WiFi 6 and Bluetooth 5.2 built in
- +Handles light gaming and office tasks in one box
Cons
- -Integrated graphics limit serious or modern gaming
- -Only one RAM stick installed, so no dual-channel out of the box
- -Pricier than bare-bones mini PCs with similar specs
Detailed Review
The GMKtec Nucbox M5S is a compact desktop PC built around AMD's Ryzen 3 5400U processor. It is aimed at people who want a capable, space-saving machine for everyday office work, light gaming, or even light server duties, without the bulk or power draw of a full-size tower. The 7nm chip runs at a base clock of 2.6GHz and boosts to 4.0GHz across 8 threads, which is enough headroom for multitasking across spreadsheets, presentations, and video conferencing simultaneously.
The display setup is a genuine highlight. The M5S supports three monitors at the same time: one via HDMI 2.0 at 4K 60Hz, one via DisplayPort at 4K 60Hz, and one via USB4 at up to 8K 60Hz. That is an unusual capability at this size and makes the machine genuinely useful as a multi-screen workstation. On the connectivity side, you get dual 2.5Gb RJ45 LAN ports, which is a feature usually reserved for networking-focused builds. This makes the M5S workable as a light pfSense or Untangle router, or simply as a desktop with very fast wired speeds. WiFi 6 and Bluetooth 5.2 round out the wireless options.
The 16GB of DDR4 RAM and 512GB PCIe 3.0 SSD cover typical daily workloads comfortably. What stands out is the upgrade path: the system supports up to 128GB of RAM and a second SSD slot that accepts PCIe 4.0 drives up to 8TB. Those upgrades are not included, but having the physical slots available means the machine can grow with your needs. The AMD Radeon integrated graphics run 6 cores at 1600MHz, which is enough for indie titles, retro console emulation via Batocera, and older Steam games, but not for demanding modern titles.
A few trade-offs are worth noting. The single RAM stick means you are not getting dual-channel memory performance out of the box, which can matter for integrated graphics. The listing does not specify the physical dimensions or weight of the unit, so check the product page if desk space is tight. The 1-year limited warranty covers manufacturing defects, which is standard but shorter than what some competitors offer.
Verdict: The Nucbox M5S is a well-rounded compact desktop for home office users, light gamers, and anyone who needs dual 2.5Gb LAN or triple-monitor support in a small footprint. If you need to run demanding 3D games or heavy creative workloads, a dedicated GPU setup would serve you better.
Specifications
- Processor: AMD Ryzen 3 5400U, 2.6GHz base, 4.0GHz boost, 8 threads, 7nm
- RAM: 16GB DDR4 SO-DIMM (1x16GB), expandable to 128GB
- Storage: 512GB M.2 2280 PCIe 3.0 SSD, dual slot supports PCIe 4.0 up to 8TB
- Integrated Graphics: AMD Radeon, 6 cores at 1600MHz
- Display Output: HDMI 2.0 (4K@60Hz), DisplayPort (4K@60Hz), USB4 (8K@60Hz), triple display support
- Wired Networking: Dual 2.5Gb RJ45 LAN (up to 2500Mbps each)
- Wireless: WiFi 6 (2.4GHz and 5GHz), Bluetooth 5.2
- USB Ports: 2x USB 3.2 Gen2, 2x USB 2.0, 1x USB Type-C (USB 3.2 Gen2 10Gbps, PD 100W, 4K@60Hz video)
- Audio: 3.5mm combo headphone and microphone jack
- Warranty: 1-year limited from date of purchase
Who Should Buy It
A great fit if you:
- Need a compact desktop for office tasks like video calls, spreadsheets, and multi-tab browsing
- Want to run two or three monitors without a full-size tower
- Need fast wired networking for a home server, pfSense, or Untangle setup
- Enjoy retro console emulation or older indie games and do not need a dedicated GPU
- Want room to upgrade RAM and storage later without buying a new machine
Consider something else if you:
- Play modern, graphically demanding games that require a discrete GPU
- Need heavy creative workloads like 3D rendering or high-resolution video editing at speed
FAQ
Can I add more RAM or a larger SSD later?
Yes. The system has an open RAM slot and supports up to 128GB total. There is also a second M.2 slot that accepts PCIe 4.0 drives up to 8TB. Neither upgrade is included with the unit.
Does it support more than one monitor?
It supports up to three monitors simultaneously: one via HDMI 2.0 at 4K 60Hz, one via DisplayPort at 4K 60Hz, and one via the USB4 port at up to 8K 60Hz.
Can the USB-C port charge other devices?
The USB Type-C port supports Power Delivery up to 100W, so it can be used to charge compatible devices. It also carries USB 3.2 Gen2 data at 10Gbps and video output at 4K 60Hz.
What kind of gaming can it handle?
The integrated AMD Radeon graphics with 6 cores at 1600MHz are suited for retro console emulation, indie titles, and older Steam games. The listing does not indicate it can run modern, graphically intensive titles at high settings.
Product Details
| Brand | GMKtec |
| ASIN | B0CD7Y4C5Y |
