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GMKtec K12 Gaming Mini PC Oculink AMD Ryzen 7 H 255 (Upgraded 8745HS) 32GB DDR5 RAM 512GB SSD, Desktop Computer Radeon 780M Graphics, 3X M.2 2280 Storage Expansion, Dual NIC 2.5G, HDMI 2.1, USB4

(17 Reviews)
Estimate Shipping Time: 7 Days
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$649.99 /pc
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Description

GMKtec K12 Gaming Mini PC Oculink AMD Ryzen 7 H 255 (Upgraded 8745HS) 32GB DDR5 RAM 512GB SSD, Desktop Computer Radeon 780M Graphics, 3X M.2 2280 Storage Expansion, Dual NIC 2.5G, HDMI 2.1, USB4

GMKtec K12 AMD Ryzen 7 H 255 (Turbo 4.9GHz, 8C/16T) 32GB DDR5+512GB

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

gmktec k12 mini gaming pc

Merchant Video

Upgraded Model with Oculink Port, Larger Cooling Fans and Quad Display Support!

mini pc amd ryzen 7 h 255 business office gaming mini pc all in one desktop computer

GMKtec K12 AMD Ryzen 7 H 255 Specification

CPU AMD Ryzen 7 H 255 (8C/16T, Up to 4.9GHz, L3 16MB Cache, TDP35~70W)
GPU AMD Radeon 780M (12Core 2600 MHz)
RAM 32GB Dual Channel (16GB*2) DDR5 5600 MT/S
Storage 512GB PCIe 4.0 3*M.2 2280 SSD NVME
Storage Expansion Triple M.2 SSD 2280 Slots. MAX (2* PCIE4.0x2/ 1* PCIE4.0x4) 8TB*3=24TB
Wireless LAN Dual 2.5G LAN (RJ45) | WIFI 6E BT5.2
Video output Quad Display Output, HDMI 2.1 (8K@120HZ), DP1.4 (8K@120HZ), Type-C (PD/DP/Data)*1, USB4.0*1
Other Functions 13 Mode RGB Fan Lighting Button, Wake ON LAN, Auto Power ON, Performance Settings, Oculink Port on the Rear Interface, 3.5mm audio port on the rear interface
Interface 2* 3.5mm CTIA Port; 1*Power Mode Button; 1*Fan Light Mode Button; 1* USB 4.0 Port;1*Type-C (PD/DP/Data)；1* HDMI 2.1 Port; 1* DP1.4 Port; 3* USB 3.2 Gen2 (10Gbps) Port; 2*USB2.0; 2* RJ45 (2.5G LAN) Port
Power Adapter DC IN: 19V-6.32A 120W Certification | Input: 100-240V AC, 50/60Hz , Output: 19V/6.32A
Operating Environment -10°C--45°C，30%--85% Humidity
Storage Environment -20°C--60°C，10%--90% Humidity
Cooling Method VC Cooling Design for CPU with Large Fans + DDR/SSD Cooling Fan with Lighting
Package Contents 1 x GMKtec Nucbox K12 AMD Ryzen 7 H 255 Mini PC, 1 x Power Adapter, 1 x HDMI Cable, 1 x User Manual, 1 x VESA Mount with Screws
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

K12 Gaming Performance Vid

Merchant Video

GMKtec K12 AMD Ryzen 7 H 255 Excellent Gameplay Performance!


Witness the raw power of the GMKtec K12 mini PC! This video tests its AMD Ryzen 7 H 255 processor in Baldur’s Gate 3 and Borderlands 3. See how its integrated 780M iGPU performs as a standalone system, and then watch the massive performance leap when its OCuLink port connects to a Radeon RX 7600 XT eGPU (Not included). We compare results against similar mini PCs, showcasing how the K12’s superior 65W sustained TDP and robust cooling deliver unbeatable performance.

K12 Mini PC Package Contents

mini pc ryzne 7 h 255 retail boxed packaging hdmi cable power supply adapter user manual vesa

Reviews Ratings

4.3 Out Of 50
(17 Reviews)
Rate This Product

  • Jack

    03-04-2026

    Great shopping experience and a dependable product.

  • Grace

    02-04-2026

    The product feels sturdy and the color looks good in person.

  • Anna

    01-04-2026

    Setup was simple and everything worked as described.

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