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

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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

Product Details Visit the GMKtec Store




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  5. gmktec mini pc manufacturer reliable top supply chain reliable quality

  6. Shenzhen GMK Technology Co., Ltd is a high-tech enterprise integrating scientific research, development, production and sales of Mini PC and Computer Accessories.

    Our company was established on June 6, 2019 and our core team is composed of engineers with 20 years of experience in consumer electronics. It was our shared dream that brought us together as GMKtec.

    GMKtec manufactures professional Mini PC computers.

  7. How did we get our start?

    GEEK | We aim to provide the ultimate product experience for users around the world.

    MODERN | We aim to provide users with cutting-edge technology products.

    (K) Creative | We always adhere to the innovative spirit of keeping pace with the times.

    The GMKtec mini PCs are widely used at office, home theater and bussiness. All computers support customer customization.

  8. Why are prices increasing monthly?

    Due to global market constraints, DDR4/DDR5 RAM and SSD storage prices are on the rise. If you have been planning a PC build or storage expansion, now is the time to buy. Current inventory is still available at existing rates, but forecasts indicate costs will continue climbing. Don't wait until it costs more—lock in your savings today and upgrade with confidence.

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  15. for Office Work

  16. Premium Gaming Mini PC

    Equipped with the latest AMD Ryzen & Intel Processories. Built-in GPU for smooth framerate and gameplay.

  17. Works Good for Productivity
  18. Provides Professional Mini PC and Protable Monitor
  19. gmktec mini gaming pc save electricity carbon emmission

Product description

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

What"s in the box

  • GMKtec Nucbox K12 AMD Ryzen 7 H 255 Mini PC Computer
  • Power Supply & Cable
  • HDMI Cable
  • User Manual
  • VESA Mount with Screws

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    4.5 out of 5 stars

    Manufacturer Information
  • GMKtec Nucbox K12 AMD Ryzen 7 H 255 Mini PC Computer
  • Power Supply & Cable
  • HDMI Cable
  • User Manual
  • VESA Mount with Screws

    • GMKtec Mini PC

    1 Year War~ranty, 24Hr Support.

    Amazing discounts for Business Buyers.

    Follow our brand for deals and updates.

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    5. gmktec mini pc manufacturer reliable top supply chain reliable qualitygmktec mini pc manufacturer reliable top supply chain reliable quality

    6. Shenzhen GMK Technology Co., Ltd is a high-tech enterprise integrating scientific research, development, production and sales of Mini PC and Computer Accessories.

      Our company was established on June 6, 2019 and our core team is composed of engineers with 20 years of experience in consumer electronics. It was our shared dream that brought us together as GMKtec.

      GMKtec manufactures professional Mini PC computers.

    7. How did we get our start?

      GEEK | We aim to provide the ultimate product experience for users around the world.

      MODERN | We aim to provide users with cutting-edge technology products.

      (K) Creative | We always adhere to the innovative spirit of keeping pace with the times.

      The GMKtec mini PCs are widely used at office, home theater and bussiness. All computers support customer customization.

    8. Why are prices increasing monthly?

      Due to global market constraints, DDR4/DDR5 RAM and SSD storage prices are on the rise. If you have been planning a PC build or storage expansion, now is the time to buy. Current inventory is still available at existing rates, but forecasts indicate costs will continue climbing. Don't wait until it costs more—lock in your savings today and upgrade with confidence.

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    15. for Office Workfor Office Work

    16. Premium Gaming Mini PC

      Equipped with the latest AMD Ryzen & Intel Processories. Built-in GPU for smooth framerate and gameplay.

    17. Works Good for ProductivityWorks Good for Productivity
    18. Provides Professional Mini PC and Protable MonitorProvides Professional Mini PC and Protable Monitor
    19. gmktec mini gaming pc save electricity carbon emmissiongmktec mini gaming pc save electricity carbon emmission

    Product description

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