GMKtec NucBox K12
The 8-core Ryzen 7 H 255 and Radeon 780M iGPU deliver strong AVX512-capable compute and quad 4K/8K display support in a 0.82kg chassis. An Oculink port provides PCIe 4.0 x4 bandwidth for eGPU setups, while dual 2.5GbE LAN and three M.2 slots offer unusual server-grade expandability for a mini PC. This system is best for developers and home-lab enthusiasts who need a compact, multi-display workstation with high-speed networking and storage flexibility.
CPU AMD Ryzen 7 H 255
RAM 32 GB
Storage 1 TB
GPU AMD Radeon 780M
form factor mini
psu w 120
OS OS Pro
71 Overall Score
Price $740
Snapshot
Pros & Cons
Pros
- Strong social proof (96th percentile) 96th
- Strong port selection (87th percentile) 87th
- Strong ram (82nd percentile) 82nd
- Strong storage (73rd percentile) 73rd
Cons
- Below average reliability (12th percentile)
The proof
Performance
Specifications
Full Specifications
Processor
| CPU | AMD Ryzen 7 H 255 |
| Cores | 8 |
| Frequency | 4.9 GHz |
| L3 Cache | 16 MB |
Graphics
| GPU | AMD Radeon 780M |
| Type | Integrated |
| VRAM Type | Shared |
Memory & Storage
| RAM | 32 GB |
| RAM Generation | DDR5 |
| Storage | 1 TB |
| Storage Type | NVMe SSD |
Build
| Form Factor | mini |
| PSU | 120 |
| Weight | 0.8 kg / 1.8 lbs |
Connectivity
| USB-C Ports | 2 |
| USB Ports | 5 |
| Thunderbolt | USB4.0 x 1 |
| HDMI | 1x HDMI 2.1 |
| DisplayPort | 1x DisplayPort 1.4 |
| Wi-Fi | Wi-Fi 6E |
| Bluetooth | Bluetooth 5.2 |
| Ethernet | 2.5GbE |
System
| OS | OS Pro |
vs Competition
| Spec | GMKtec NucBox K12 | Lenovo Legion Tower 5i 90YA003GUS | HP OMEN GT16-0364 | Apple Mac Studio M4 Max | Dell Tower ECT1250 | CLX SET TGMSETRTU5204BM |
|---|---|---|---|---|---|---|
| CPU | AMD Ryzen 7 H 255 | Intel Core Ultra 7 265F | AMD Ryzen 7 8700F | Apple M4 Max | Intel Core Ultra 7 265 | Intel Core i9 14900KF |
| RAM (GB) | 32 | 32 | 32 | 36 | 32 | 64 |
| Storage (GB) | 1024 | 1000 | 1024 | 512 | 2000 | 8000 |
| GPU | AMD Radeon 780M | NVIDIA GeForce RTX 5060 Ti | NVIDIA GeForce RTX 5070 | Apple M4 Max 32-core | Intel UHD Graphics | NVIDIA GeForce RTX 5070 |
| Form Factor | mini | mid-tower | mid-tower | sff | mid-tower | mid-tower |
| Psu W | 120 | 500 | 850 | - | 180 | 850 |
| OS | OS Pro | Windows 11 Home | Windows 11 Home | macOS | Windows 11 Home | Windows 11 Home |
| Compare | Compare | Compare | Compare | Compare |
| Product | CPU | GPU | RAM | Ports | Storage | Reliability | Social Proof |
|---|---|---|---|---|---|---|---|
| GMKtec NucBox K12 | 63.5 | 55.9 | 82.4 | 87.4 | 72.8 | 11.6 | 96.3 |
| Lenovo Legion Tower 5i 90YA003GUS Compare | 87.3 | 73 | 82.4 | 94 | 63.9 | 70.5 | 99.6 |
| HP OMEN GT16-0364 Compare | 68.6 | 82.4 | 87.5 | 97.9 | 57.3 | 70.5 | 99.1 |
| Apple Mac Studio M4 Max Compare | 85.5 | 66.4 | 69.2 | 94.5 | 31 | 99.4 | 99.9 |
| Dell Tower ECT1250 Compare | 89.5 | 30.8 | 82.4 | 86.2 | 82.6 | 70.5 | 99.1 |
| CLX SET TGMSETRTU5204BM Compare | 94.2 | 82.4 | 96.4 | 86.2 | 99.2 | 11.6 | 95.5 |
Price
Value & Pricing
From $740
Amazon 1 offer From $740
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
