GMKtecMini PC reference
GMKtec K12
GMKtec K12 combines AMD Ryzen 7 H 255 with integrated Radeon 780M for office multitasking, development and media work. Gaming and GPU-accelerated applications depend on their settings and driver support; the graphics specification alone is not a measured performance result. Replaceable SO-DIMM memory gives it a path for later RAM upgrades. OCuLink allows a separate compatible external GPU dock; connect or disconnect it only with the PC powered off.
- Processor
- AMD Ryzen 7 H 255
- Graphics
- Radeon 780M
- Memory
- 32 GB
- Storage
- 1 TB
Prices across stores
MiniPC.guru compares retailer listings. Purchases are completed on the retailer’s website.
| Retailer | Availability | Listed price | Last checked | Retailer website |
|---|---|---|---|---|
 | In stock | $919.99 | View at GMKtec |
Availability reflects the latest store check. Shipping, tax, coupons and checkout totals are not included; confirm them at the store.
Specifications
Processor, graphics and installed memory/storage describe the selected configuration. Expansion limits and connectivity describe the model; optional hardware is identified separately. References are collected in About this data below.
- Processor
- AMD Ryzen 7 H 255
- Graphics
- Radeon 780M
- Memory
- 32 GB
- Storage
- 1 TB
- Ports & displays
- 3 × USB-A 3.2 Gen 2 (10Gbps), 2 × USB-A 2.0; front USB-C 3.2 Gen 2 (data, DP, PD), rear USB4; HDMI 2.1, DisplayPort 1.4; OCuLink PCIe 4.0 ×4; 2 × 2.5GbE; 2 × 3.5mm audio jacks and DC input. Four display outputs are advertised. OCuLink is not hot-pluggable.
- Ethernet, Wi-Fi & Bluetooth
- Wi-Fi 6E (RZ616, up to 2.4Gbps); Bluetooth 5.2; Dual 2.5G Ethernet LAN (Realtek 8125BG) Link rates are theoretical, not measured throughput.
- RAM & storage upgrades
- 2 × DDR5 SO-DIMM Slots; Dual-channel support; DDR5-5600 Memory; Supports up to 96GB. 3 × M.2 2280 PCIe 4.0 SSD Slots; 1 × PCIe 4.0 ×4 slot + 2 × PCIe 4.0 ×2 slots; Supports up to 24TB total storage
- Power supply & power limits
- Power supply / DC input rating: DC Power Adapter 19V / 6.32A, 120W. This is a supply rating, not measured wall-power consumption.
- Dimensions & weight
- 154 × 151 × 73.6 mm; Approx. 920 g. Dimensions follow the manufacturer order; axes are not labeled.
Performance
A fixed game, build, benchmark scene, graphics preset and upscaling setting must be specified before publishing results.
Price history
GMKtec K12 · 32 GB RAM · 1 TB SSD
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New condition · US stores · USD · Selected configuration only. Chart prices exclude shipping and tax. Missing or failed checks leave gaps.
About this data2 references
Specs and any benchmark results come from the sources below. We haven't tested this Mini PC ourselves.
Sources
- GMKtec K12 — manufacturer specifications ↗
- Manufacturer / specification source
- Ports & displays · Reviewed Sep 15, 2026
- Ethernet, Wi-Fi & Bluetooth · Reviewed Sep 15, 2026
- RAM & storage upgrades · Reviewed Sep 15, 2026
- Power supply & power limits · Reviewed Sep 15, 2026
- Dimensions & weight · Reviewed Sep 15, 2026
- Selected configuration ↗
- Selected configuration
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