GMKtec
GMKtec Nucbox M5 S Ryzen 5300U Compact Gaming Mini PC
A palm-sized Ryzen desktop with dual 2.5GbE ports, making it equally credible as an office PC or a Pfsense firewall box
$399.99*$569.99Save 29%
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Overview
Key Features
AMD RYZEN 5400U MINI PC – BALANCED PERFORMANCE FOR DAILY WORK & ENTERTAINMENT --- GMKtec NucBox M5S mini PC is powered by AMD Ryzen 5400U processor with 4 cores and 8 threads, built on advanced 7nm FinFET technology. With a 2.6GHz base clock and up to 4.0GHz boost frequency, M5S delivers reliable performance for office work, web browsing, home entertainment, online learning, and light creative tasks while maintaining excellent energy efficiency.
16GB DDR4 RAM + 512GB PCIe SSD – EASY UPGRADES WITH FLEXIBLE EXPANSION --- M5S comes with 16GB DDR4 3200MT/s memory and 512GB M.2 PCIe 3.0 SSD for fast startup and responsive daily performance. Featuring dual SO-DIMM memory slots supporting up to 64GB RAM and dual M.2 2280 SSD slots supporting up to 16TB total storage, users can easily upgrade memory and storage for future needs.
AMD RADEON GRAPHICS – LIGHT GAMING & MULTIMEDIA PERFORMANCE --- Integrated with AMD Radeon Graphics featuring 6 graphics cores and up to 1600MHz frequency, M5S delivers smooth visuals for everyday entertainment, HD video playback, and lightweight gaming. Whether watching movies, handling office graphics, or running popular casual games, this compact mini PC provides dependable graphics performance without the size of a traditional desktop.
DUAL 2.5G LAN + WIFI 6E – HIGH-SPEED NETWORKING FOR HOME AND BUSINESS --- Equipped with dual 2.5Gbps Ethernet ports powered by Realtek RTL8125, M5S provides faster and more stable wired connections for NAS, soft routing, home servers, and multi-device networking. Combined with WiFi 6E and Bluetooth 5.2, it delivers reliable wireless connectivity for streaming, video meetings, smart devices, and everyday computing.
TRIPLE DISPLAY OUTPUT – EXPAND YOUR WORKSPACE WITH MULTI-SCREEN SUPPORT --- M5S supports three independent displays through HDMI 2.0, DisplayPort 1.4, and full-function USB-C. The DP interface supports up to 8K@60Hz output, while USB-C supports 4K@60Hz display output, making it ideal for multitasking, office productivity, monitoring systems, and efficient workspace setups.
DUAL-FAN COPPER COOLING SYSTEM – QUIET AND STABLE PERFORMANCE --- M5S adopts a copper cooling system with dual fans and surrounding airflow design to maintain stable performance during daily workloads. With three performance modes including Silent 10W, Balanced 15W, and Performance 25W (peak 35W), users can easily balance noise, power consumption, and performance for different scenarios.
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.
Specifications
Brand
GMKtec
Model
Nucbox M5 S
Processor
AMD Ryzen 5300U, ZEN 3+, 4 cores / 8 threads
Clock Speed
2.00GHz base (quiet mode), up to 4.50GHz Turbo Boost (performance mode)
Graphics
AMD Radeon, 8 cores, 2000MHz
Memory
16GB DDR4 dual channel (2x8GB), expandable to 64GB
Storage
M.2 2280 PCIe 3.0 SSD, dual slot, expandable to 8TB
Networking
Dual 2.5GbE RJ45 (up to 2500Mbps)
Wireless
WiFi 6E tri-band (2.4G/5G/6G), Bluetooth 5.2
Video Outputs
HDMI 2.0 (4K@60Hz), DisplayPort, USB-C (DP), triple display support
USB Ports
2x USB 3.2, 2x USB 2.0, 1x USB-C (PD/DP/Data)
Other Ports
3.5mm audio (headphone and mic), DC power input
Warranty
1-year limited warranty
Frequently Asked Questions
Does the GMKtec M5 S actually ship with a Ryzen 5300U or a 5400U processor?
The feature text specifies the AMD Ryzen 5300U with 4 cores and 8 threads, while the product title references a 5400U. Confirm the exact chip with the seller before ordering.
How much RAM and storage does the Nucbox M5 S come with out of the box?
It ships with 16GB of DDR4 installed as a dual-channel 2x8GB kit. Storage is listed inconsistently at 512GB in the title and 1TB in the feature description, so verify before purchase.
Can I use the M5 S as a Pfsense or Untangle firewall appliance?
Yes. GMKtec specifically positions the dual 2.5GbE RJ45 NIC configuration for Untangle, Pfsense, or small office server use, with up to 2500Mbps of transmission speed.
How many monitors can the Nucbox M5 S drive at the same time?
Three. The 8-core Radeon GPU supports simultaneous connection to three displays via the HDMI 2.0 port, the DisplayPort output, and the USB-C port's DP capability.
Can I upgrade the memory and SSD later, and how far can they go?
Memory expands to 64GB and storage to 8TB across two M.2 2280 PCIe 3.0 slots. GMKtec notes these upgrade components are not included with the machine.
Is the M5 S loud, or can it be configured to run quietly?
The BIOS includes a power-saving quiet mode that holds the processor at its 2.00GHz base clock, with a separate performance mode that unlocks the 4.50GHz Turbo Boost ceiling.
What warranty coverage does GMKtec provide on this mini PC?
A one-year limited warranty starting from the purchase date, covering defects in design and workmanship, backed by GMKtec's after-sales support team.
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