GMKtec
GMKtec M6 Ultra Gaming Mini PC
Bottom line: The GMKtec M6 Ultra Gaming Mini PC ($474.97 on Amazon as of 2026-10-06): Zen 4 Ryzen 5 7640HS: 6 cores, 12 threads, boosts to 5.0GHz; main trade-off: ships with PCIe 3.0 NVMe though both M.2 slots support PCIe 4.0 x4.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Zen 4 Ryzen 5 7640HS: 6 cores, 12 threads, boosts to 5.0GHz
- ✓ Radeon 760M RDNA 3, 8 GPU cores at up to 2600MHz for esports titles
- ✓ Drives three 4K/60 displays via HDMI 2.0, DisplayPort and USB4
- ✓ Dual 2.5GbE ports for NAS, home lab, pfSense or dual-network setups
- ✓ Expandable to 128GB DDR5 across 2 SO-DIMM slots and 8TB per M.2 slot
Cons
- ✗ Ships with PCIe 3.0 NVMe though both M.2 slots support PCIe 4.0 x4
- ✗ DDR5-4800 is slow for an iGPU that scales heavily with memory bandwidth
- ✗ 50W Performance mode caps sustained gaming headroom versus a desktop
- ✗ HDMI 2.0 and DisplayPort top out at 4K 60Hz, no 4K 120Hz output
SpecPicks Verdict
SpecPicks scored GMKtec M6 Ultra Gaming Mini PC using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the home ai / computer lab category. GMKtec's home ai / computer lab lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for home ai / computer lab of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Video review
Value Packed Mini PC: GMKTec M6 Ultra Review — Lon.TV on YouTube
Key Features
- MINI PC FOR GAMING, CREATION & PRODUCTIVITY - The GMKtec NucBox M6 Ultra combines the AMD Ryzen 5 7640HS processor, 16GB dual-channel DDR5 memory, and a fast 1TB PCIe SSD for responsive performance across PC gaming, office productivity, programming, online study, content creation, live streaming, and home business use. Its 6-core, 12-thread Zen 4 processor reaches up to 5.0GHz, while AMD Radeon 760M RDNA 3 graphics supports popular games, photo and video editing, 4K entertainment, and multi-display workloads. It is an ideal compact desktop for users who need stronger multitasking, graphics capability, and storage capacity than a basic entry-level mini PC.
- RADEON 760M RDNA 3 GRAPHICS FOR GAMING & CREATION - The M6 Ultra integrates AMD Radeon 760M graphics with 8 graphics cores running at up to 2600MHz. Paired with dual-channel DDR5 memory, it supports popular esports games and a wide range of PC titles at suitable settings, along with 4K video playback, photo editing, video production, live streaming, and other creative workloads. It delivers capable graphics performance in a compact system without taking up the space of a traditional gaming desktop.
- 16GB DUAL-CHANNEL DDR5 + FAST 1TB SSD - The NucBox M6 Ultra comes with 16GB DDR5-4800 dual-channel memory and a 1TB M.2 2280 PCIe 3.0 NVMe SSD, providing fast startup, responsive application loading, and smooth multitasking. Two SO-DIMM slots support DDR5 memory expansion up to 128GB, while two M.2 2280 slots support PCIe 4.0 x4 SSDs with capacities up to 8TB per drive. The installed memory and SSD specifications are different from the maximum supported upgrade specifications. Upgrades are not included.
- THREE PERFORMANCE MODES + DUAL-FAN COOLING - Choose from Silent 35W, Balanced 45W, and Performance 50W modes to match different workloads. Silent Mode is suited to studying, web browsing, and everyday office work, while Performance Mode provides additional power for gaming, code compilation, creative applications, and heavier multitasking. A dual-fan cooling design uses dedicated CPU cooling and a separate system fan for the memory and SSD area, helping maintain stable performance during extended workloads.
- TRIPLE 4K DISPLAY FOR PRODUCTIVITY & ENTERTAINMENT - Connect up to three 4K displays simultaneously through HDMI 2.0, DisplayPort, and USB4. HDMI 2.0 and DisplayPort support resolutions up to 4K at 60Hz, while USB4 provides an additional display output for an expanded desktop. The three-screen setup is ideal for spreadsheets, programming, research, video meetings, content editing, stock tracking, digital signage, gaming, and home entertainment. Monitors and cables are sold separately.
- FULL-FUNCTION USB4 + 100W TYPE-C POWER INPUT - The front USB4 port supports transfer speeds up to 40Gbps, DisplayPort 1.4 video output, data connectivity, docking stations, and up to 100W USB-C PD input. A compatible 100W USB-C PD charger and cable can simplify portable workstations and compact desktop setups. The included 120W DC power adapter remains the standard power option for stable system performance. USB-C chargers, cables, docks, and external devices are sold separately.
Full Specifications
| Brand | GMKtec |
|---|---|
| RAM Type | DDR5 RAM |
| CPU Model | AMD Ryzen 5 7640HS |
| CPU Speed | 4.3 GHz |
| Cache Size | 1 TB |
| Dimensions | 5.07 x 5.00 x 1.88 inch |
| Model Name | M6 Ultra |
| Resolution | 2560 x 1600 |
| Style Name | M6 Ultra R5 7640HS |
| Unit Count | 1 Count |
| Screen Size | 75 inches |
| Aspect Ratio | 16:10 |
| Connectivity | Bluetooth, USB-C, WiFi, 2.4GHz |
| Memory Speed | 4800 mt_s |
| Model Number | M6 Ultra |
| Video Output | HDMI, DisplayPort |
| Compatibility | PC, Switch |
| Built-In Media | GMKtec Nucbox M6 Ultra AMD Ryzen 5 7640HS Mini PC Computer, HDMI Cable, Power Supply & Cable, User Manual, VESA Mount and Screws |
| Cooling Method | Dual Fan |
| Connection Type | Wired |
| Full listing title | GMKtec M6 Ultra Gaming Mini PC, AMD Ryzen 5 7640HS, 16GB DDR5, 1TB PCIe SSD | Radeon 760M, USB4, WiFi 6E, BT 5.2, DP And HDMI 2.0 Support Triple 4K Displays For PC Gaming, Office, Home And Creative Work |
Performance Data
View gaming FPS, AI inference throughput, and synthetic scores for the AMD Ryzen 5 7640HS — the core hardware component in this product. Benchmarks sourced from TechPowerUp, PassMark, and the r/LocalLLaMA community.
Ready to buy?
GMKtec M6 Ultra Gaming Mini PC, AMD Ryzen 5 7640HS, 16GB DDR5, 1TB PCIe SSD | Radeon 760M, USB4, WiFi 6E, BT 5.2, DP And HDMI 2.0 Support Triple 4K Displays For PC Gaming, Office, Home And Creative Work is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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