The GMKtec NucBox M8 is a strong fit for office work, multitasking and everyday media: its six-core Ryzen 5 PRO 6650H offers capable CPU performance in a small case, while its Radeon 660M graphics are better suited to light gaming than demanding creative work. Its standout practical features are triple-display support, two M.2 storage slots, USB4, OCuLink and dual 2.5GbE Ethernet. The trade-offs are fixed 16GB RAM and integrated graphics that limit 4K editing and serious 3D work.
What the GMKtec M8 is—and who it suits
The NucBox M8 is a compact Windows 11 Pro mini PC built around AMD’s Ryzen 5 PRO 6650H, a 6-core, 12-thread processor with a 3.3GHz base clock and boost up to 4.5GHz. Its integrated Radeon 660M handles display output and graphics without a separate graphics card. GMKtec lists 16GB of soldered LPDDR5-6400 memory, with 512GB or 1TB storage configurations. GMKtec’s specifications also include Wi-Fi 6E, Bluetooth 5.2, USB4, OCuLink, HDMI 2.0, DisplayPort 1.4 and two 2.5G Ethernet ports.
This combination is most compelling for a desk where compact size, everyday responsiveness and connection options matter more than gaming performance or future RAM upgrades. TechRadar rated the M8 4.5/5 and recommended it, describing it as an exceptionally compact office computer with more CPU capability than is typical at this size. The review’s 2026 update reports smooth use for Microsoft Office, video calls, browsing, streaming, Photoshop and Lightroom. Those are review findings, not a published benchmark table; no quantitative performance scores are available in the cited coverage.
How well does the M8 handle work and creative tasks?
Office work and multitasking
For documents, spreadsheets, browser tabs, video meetings and streaming, the M8’s processor is the main attraction. TechRadar’s follow-up testing found these everyday tasks smooth, and its review says the machine “handles productivity with ease.” This is the kind of workload the M8 is designed to handle well, particularly where multiple displays and wired networking are useful.
#1 Best Overall
- VERSATILE MINI PC FOR WORK, HOME & GAMING - GMKtec NucBox M8 combines an AMD Ryzen 5 PRO 6650H processor, Radeon 660M graphics, 16GB LPDDR5 memory, and a 1TB SSD in a compact desktop. It is designed for office productivity, coding, online learning, research, video calls, creative projects, livestreaming, media playback, and mainstream PC gaming at settings suited to integrated graphics. The 6-core, 12-thread platform provides responsive multitasking for home users, students, creators, and small-business environments.
- AMD RYZEN 5 PRO 6650H + RADEON 660M GRAPHICS - Built with Zen 3+ architecture and a 6nm process, the Ryzen 5 PRO 6650H features 6 cores, 12 threads, a 3.3GHz base clock, and up to 4.5GHz boost, with 3MB L2 and 16MB L3 cache. Radeon 660M integrated graphics provides 6 graphics cores running at up to 1,900MHz for smooth desktop visuals, high-resolution media playback, and capable integrated-graphics gaming.
- 16GB LPDDR5-6400 + 1TB PCIe SSD - This 16GB+1TB configuration includes 16GB LPDDR5-6400 memory and a 1TB M.2 2280 PCIe 3.0 SSD for quick startup, responsive application loading, and convenient space for documents, projects, software, and media. The memory is onboard and not user-replaceable. Two M.2 2280 PCIe 4.0 x4 slots support storage expansion up to 16TB total, with up to 8TB per drive. Upgrades are not included.
- THREE BIOS POWER MODES + DUAL-FAN COOLING - Select the operating profile that matches your workload: Silent Mode at 28W, Balanced Mode at 35W, or Performance Mode at 40W. The M8 uses a dual-fan cooling architecture with dedicated CPU and system airflow, surrounding intake vents, and smart fan control to help manage heat during multitasking, creative applications, and gaming. BIOS-selectable profiles let you prioritize lower power operation or higher performance when needed.
- TRIPLE-DISPLAY SUPPORT + HIGH-RESOLUTION OUTPUT - Run up to three displays simultaneously through HDMI 2.0, DisplayPort 1.4, and USB4. The specification lists up to 8K@60Hz support for the HDMI 2.0 and DisplayPort outputs, while USB4 provides DisplayPort 1.4 video at up to 4K@60Hz. Create a multi-screen workspace for spreadsheets, research, meetings, content creation, monitoring, digital signage, or entertainment. Actual resolution depends on the display, cable, and output combination.
Photo and video editing
TechRadar found Photoshop and Lightroom usable, and described HD video editing as acceptable. The more demanding case—editing 4K footage in Premiere Pro—was a struggle. The distinction matters: the Ryzen processor can make a capable small work PC, but the Radeon 660M integrated graphics are the ceiling for graphics-heavy workloads. The M8 is not a substitute for a desktop with a discrete GPU if professional 3D, intensive effects or sustained 4K editing are central to your work.
Gaming
The Radeon 660M is suitable for everyday graphics and light gaming, but expectations should remain modest for demanding modern games. The available review evidence does not provide frame rates or game-specific settings, so there is no sound basis for promising a particular resolution or performance level. Choose the M8 for productivity first, not as a gaming PC.
Can the M8 run three monitors?
Yes. GMKtec lists HDMI 2.0, DisplayPort 1.4 and USB4, and the product specification supports up to three displays. The HDMI and DisplayPort connectors provide two direct display connections; the USB4 port can be used for an additional display with compatible equipment. Check the monitor’s input and the USB-C/USB4 adapter or dock’s display compatibility before buying accessories. The cited specification establishes triple-display support, but does not state a combined maximum resolution and refresh rate for all three displays.
Rank #2
- 【Advanced Gaming PC】Powered by the AMD Ryzen 7 8845HS processor with 8 C/ 16T, up to 5.1GHz, and featuring a 16MB L3 cache. This powerful CPU excels in gaming, video editing, and multitasking. With its 35-54W TDP range, it ensures efficient power consumption without compromising on performance. NPU (AI Engine) Only in 8845HS Improved over 8745HS (No NPU) – Dedicated Neural Processing Unit for faster AI workloads (Windows Studio Effects, Copilot+, local AI tasks).
- 【32GB DDR5 + 1TB SSD】Equipped with 32GB memory capacity,DDR5 speed up to 5600MHz, offering faster data processing and multitasking. The dual 16GB channels support expansion up to 128GB, allowing users to customize based on their needs. The 1TB PCIe 4.0 M.2 SSD ensures ultra-fast storage, with expansion options up to 8TB, making it perfect for heavy workloads and large storage needs
- WHY CHOOSE DDR5 5600MHz DUAL CHANNEL (2×16GB): With a 5600MHz clock—a 17% frequency uplift over 4800MHz—this kit delivers massive bandwidth gains that elevate real-world performance. Gamers enjoy higher minimum FPS and less stutter in open-world and sim titles for a smoother competitive experience. Video editors and 3D creators benefit from faster 4K/8K timeline scrubbing, quicker renders in DaVinci Resolve and Premiere, and swifter asset loading. For AI/LLM workloads, the superior throughput reduces I/O bottlenecks, cuts token generation latency, and accelerates model fine-tuning by keeping processing cores fed with data—so you wait less and create more.
- 【Dual Intel i226V NIC 2.5Gbps, WiFi 6 & BT 5.2】Featuring dual Intel i226V 2.5Gbps Ethernet ports, K8 Plus mini PC provides faster and more stable wired network connections, ideal for gamers and content creators. WiFi 6 supports multiple frequency bands, ensuring a strong, low-latency wireless connection. BT5.2 delivers faster data transfer, lower power consumption, and support for the latest peripherals
- 【AMD Radeon 780M Gaming PC GPU】The AMD Radeon 780M is an integrated GPU based on the new RDNA3 architecture and has 12 CUs (= 768 shaders) clocked at up to 2700MHz. Thanks to the new architecture and higher clock speeds, the Radeon 780M should be clearly faster then the old Radeon 680M. This means most demanding games should be playable in minimum graphics settings (like Cyberpunk 2077) and less demanding games like Fifa 23 can be played in higher settings and resolutions (1080p).
Can you upgrade the M8’s RAM and storage?
Memory is fixed
The 16GB LPDDR5-6400 RAM is soldered to the board, so it cannot be replaced or expanded later. That makes the initial configuration an important decision: if your regular workload needs more than 16GB, the M8 is not a good choice.
Storage has room to grow
Storage is more flexible. GMKtec specifies two M.2 2280 slots and support for up to 8TB in each, for a stated maximum of 16TB total. One slot can be used for an additional PCIe 4.0 M.2 2280 NVMe SSD, subject to the system’s compatibility and installation requirements. This is an unusually generous expansion option for a mini PC, though it does not change the fixed RAM limit.
What ports and expansion options stand out?
- USB4: useful for compatible high-speed peripherals and display connections.
- OCuLink PCIe Gen4 x4: provides a path to an external GPU enclosure, but requires care during connection.
- Two 2.5G Ethernet ports: useful where fast wired networking or multiple network connections are needed.
- Wi-Fi 6E and Bluetooth 5.2: provide wireless networking and peripheral connectivity.
- HDMI 2.0 and DisplayPort 1.4: connect displays directly.
Using an eGPU over OCuLink
An OCuLink eGPU enclosure can add a discrete graphics card and address the M8’s integrated-graphics limitation. It is an additional setup, however, not an internal graphics upgrade. GMKtec warns that OCuLink is not hot-pluggable: power the PC off before connecting or disconnecting the enclosure. Do not attach or remove the cable while the system is running.
Rank #3
- PREMIUM GAMING PC MINI COMPUTER - The Nucbox M7 Ultra Mini PC is a small form factor Desktop Micro Mini Computer with an AMD Ryzen 7 PRO 6850U (8C/16T 2.70Ghz Base speed with Turbo speed up to 4.7Ghz) processor. The GPU is integrated with a powerful AMD Radeon 680M 12 Cores Graphics Card; performance is almost close to that of a full NVIDIA GTX 1050 Ti. Coupled with the support of FSR 3.0+ technology, the computer can handle heavy computing tasks and AAA gaming
- MINI PC COMPUTER SUPPORTS QUAD SCREEN 8K DISPLAY - Nucbox M7 Ultra gaming pc is equipped with Dual USB4 USB-C Video output. The latest HDMI 2.1 port can connect to large screen TV and Display Monitors and output up to 8K@60Hz resolution. The Type-C DisplayPort Video output can connect to the latest monitor displays utilizing 4K@144Hz. Features simultaneous four screen display
- OCULINK PORT - The M7 Ultra Oculink port enables higher bandwidth capabilities, better frame rates and lower lag. The standard also operates at PCIe x4 speeds, compared to Thunderbolt's x3. Gamers and content creators can benefit from OCuLink's higher bandwidth, resulting in better performance and lower lag for eGPU setups
- UPGRADED DUAL COOLING FANS - Our new Hyper Ice Chamber 2.0 design uses larger top and bottom cooling fans with 360 degrees in and out air flow. The copper base keeps the fan cool and we have lowered the fan noise down to 35dB in Quiet mode
- THREE PERFORMANCE MODES UPDATED UEFI - The M7 Ultra mini computer features an all new BIOS update with three performance modes (Quiet 35W, Balance 50W, or Performance 65W-70W). VRAM Allocation is also possible with Auto Power On, Wake-on-LAN options available
Size, mounting, cooling and warranty
There is a discrepancy between published dimensions. GMKtec lists the M8 at 107 × 111 × 63 mm and approximately 590g; TechRadar reports its reviewed retail chassis as 127 × 127 × 48.2 mm and 490g bare. These figures should not be treated as interchangeable, and the available sources do not explain the difference. Confirm the dimensions for the exact version being sold if desk space or mounting clearance is critical.
TechRadar notes that a VESA mount is optional and not included, so budget for a compatible mount if you want to attach the PC behind a monitor. GMKtec lists a 100W power adapter and a one-year limited warranty. The reviewed coverage does not publish measured noise or temperature figures, so it does not establish how loud or warm the system will be under a particular workload.
Price and value depend on the listing date
Prices in the review coverage are dated snapshots, not current quotes. At publication, TechRadar cited $329 for the 16GB/512GB configuration and noted a 1TB option. Its September 2026 update reported an Amazon price of around $390, down from about $480 at that time. Check the listing for your region and configuration before buying; those figures do not establish today’s price or availability.
Should you buy the GMKtec M8?
The M8 makes the most sense as a compact office and general-purpose PC when you value strong CPU-focused productivity, three-display capability, fast networking and unusually generous SSD expansion. Its most consequential compromise is not storage but memory: the 16GB RAM is soldered, while the integrated Radeon 660M limits demanding graphics work. If your priority is gaming, professional 3D or intensive 4K editing—or you know you will need more than 16GB RAM—look for a different class of system.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
