---
product_id: 600362525
title: "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"
brand: "gmktec"
price: "¥229879"
currency: JPY
in_stock: true
category: "Gm Ktec"
url: https://www.desertcart.jp/products/600362525-gmktec-k12-gaming-mini-pc-oculink-amd-ryzen-7-h
store_origin: JP
region: Japan
---

# 4.9 GHz Ryzen 7 H 255 CPU 32GB DDR5 5600MHz RAM + 512GB PCIe 4.0 SSD Quad 4K/8K Display via HDMI 2.1 & DP 1.4 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

**Brand:** gmktec
**Price:** ¥229879
**Availability:** ✅ In Stock

## Summary

> 🔥 Compact Powerhouse, Infinite Possibilities!

## Quick Answers

- **What is this?** 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 by gmktec
- **How much does it cost?** ¥229879 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/600362525-gmktec-k12-gaming-mini-pc-oculink-amd-ryzen-7-h)

## Best For

- gmktec enthusiasts

## Why This Product

- Trusted gmktec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerhouse Ryzen 7 H 255:** 8 cores, 16 threads, up to 4.9 GHz turbo for seamless multitasking and gaming dominance.
- • **Silent RGB-Cooled Mini Beast:** Dual quiet fans with customizable RGB lighting keep your rig cool and stylish under heavy loads.
- • **Next-Gen Radeon 780M Graphics:** Integrated 768 shaders GPU delivering stunning 8K visuals and smooth gameplay on FSR settings.
- • **Ultimate Connectivity & Speed:** Dual 2.5GbE NIC, WiFi 6E, Bluetooth 5.2, plus Oculink port for ultra-low latency eGPU setups.
- • **Massive Memory & Storage Expansion:** 32GB DDR5 RAM with triple M.2 slots supporting up to 24TB total storage for future-proof performance.

## Overview

The GMKtec K12 Gaming Mini PC packs an upgraded AMD Ryzen 7 H 255 CPU with 8 cores and 16 threads running up to 4.9 GHz, paired with Radeon 780M integrated graphics capable of 8K output. It features 32GB of ultra-fast DDR5 RAM, a 512GB PCIe 4.0 SSD, and triple M.2 slots for up to 24TB storage expansion. Designed for professionals and gamers alike, it supports quad 4K/8K displays via HDMI 2.1 and DisplayPort 1.4, offers dual 2.5GbE LAN, WiFi 6E, Bluetooth 5.2, and an Oculink port for high-bandwidth external GPU setups. Dual silent cooling fans with RGB lighting ensure optimal thermal performance in a sleek mini form factor.

## Description

desertcart.com: 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 : Electronics

## Features

- RYZEN 7 H 255 CPU - The Ryzen 7 H 255 is a chip from the Hawk Point family and is an upgraded version of the older Ryzen 7 8745H and has 8 cores (16 threads thanks to SMT support) that run at up to 4.9 GHz, together with the powerful Radeon 780M iGPU. Unlike Zen 3, Zen 4 offers AVX512 support along with other improvements such as larger caches/registers/buffers across the board.
- GAMING PC - The Radeon 780M (12 CUs / 768 shaders, up to 2,600 MHz) can drive multiple displays simultaneously with a resolution of up to 8K. Hardware encoding and hardware decoding of the most common video codecs (AV1, AVC, HEVC) is also no problem; playing the latest games on FSR settings without issues.
- 32GB DDR5 RAM + 512GB SSD - The K12 mini computer is equipped with Dual 16GB (Total 32GB) SO-DIMM DDR5 5600MHz memory sticks. 512GB PCIE 4.0 SSD Drive with 3x M.2 2280 Expansion slots. Each slot capable of reading up to 8TB. (24TB MAX)
- QUAD SCREEN 4K DISPLAY SUPPORT - K12 Mini PC support 4-screen 4K/8K output via HDMI 2.1 (8K@60Hz), DisplayPort 1.4 (4K@60Hz), and USB Type-C Transfer speed (supporting PD3.0/DP1.4/DATA). Ideal for gaming, video editing, and multitasking, it provides expansive and crisp multi-display support.
- OCULINK PORT - The Oculink port on the rear interface enables higher bandwidth capabilities, better frame rates and lower lag. The standard also operates at PCIe x4 speeds, compared to Thunderbolt's x3. Gamers and content creators can benefit from Oculink's higher bandwidth, resulting in better performance and lower lag for eGPU setups
- DUAL NIC FAST 2.5GBE + WIFI 6E + BT 5.2 - Dual Ethernet 2.5GbE LAN port design provides more applications, such as firewall, multichannel aggregation, soft routing, file storage server. Built-in WIFI 6E / Bluetooth 5.2 is more stable and efficient to connect multiple wireless devices such as projector, printer, monitor, speakers and etc.
- DUAL COOLING FANS WITH LIGHTING - Turbo CPU fan + a massive DDR5/SSD cooling fan deliver silent, ultra-efficient cooling (just 35dB in Quiet Mode!), while the advanced heatpipes and 360° airflow keeps your Ryzen Mini PC frosty under heavy loads. Plus, 13 dazzling RGB lighting modes let you personalize your rig’s vibe.
- GMKtec Warranty- GMKtec offers a 1-year limited warranty for each mini PC, starting from the date of the purchase. All defects due to design and workmanship are covered. With a professional after sales team always ready to attend to your needs, you can simply relax and enjoy your mini PC

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FK2BLV7J |
| Additional Features | Dual Large Cooling Quiet Fans with RGB Lighting. (Able to turn off the lighting with Fan Mode button)., Dual NIC 2.5GbE Ethernet, Dual 3.5mm CTIA Ports (Front and Rear), GAMING PC using AMD Radeon 780M iGPU, Oculink Port (Rear Port), HDMI 2.1, DP Quad Display 4K/8K Video Ports, Triple M.2 2280 Slot Expansion. Each Slot 8TB Max. (Total 24TB) |
| Aspect Ratio | 16:9 |
| Best Sellers Rank | #1,173 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #30 in Mini Computers |
| Brand | GMKtec |
| Built-In Media | GMKtec Nucbox K12 AMD Ryzen 7 H 255 Mini PC Computer, HDMI Cable, Power Supply & Cable, User Manual, VESA Mount with Screws |
| CPU Model Number | AMD Ryzen 7 H 255 |
| Cache Memory Installed Size | 32 GB |
| Color | Gunmetal(K12) |
| Compatible Devices | Headphone, Keyboard, Monitor, Mouse, Television |
| Connectivity Technology | Bluetooth, Ethernet, HDMI, USB, Wi-Fi |
| Cooling Method | Air |
| Customer Reviews | 4.5 4.5 out of 5 stars (993) |
| Display Resolution Maximum | 7680x4320 |
| Display Type | External Display |
| Graphics Card Interface | Integrated |
| Graphics Card Ram | 32 GB |
| Graphics Coprocessor | AMD Radeon 780M 2600 MHz |
| Graphics Description | Integrated |
| Graphics Ram Type | VRAM |
| Hard Disk Description | PCIe 4.0 M.2 2280 SSD Triple Slots Max.24TB |
| Hard Disk Interface | PCIE x 16 |
| Hardware Interface | 3.5mm Audio, 802.11 ac/b/g/n, Bluetooth 5, Ethernet, HDMI, PCIE x 16, USB Type C |
| Human-Interface Input | Buttons, Keyboard, Microphone, Mouse |
| Item Dimensions | 7 x 7 x 5 inches |
| Keyboard Layout | QWERTY |
| Manufacturer | Shenzhenshi Jimokekejiyouxiangongsi |
| Memory Clock Speed | 5600 MHz |
| Memory Speed | 5600 MT/s |
| Memory Storage Capacity | 32 GB |
| Model Name | K12 |
| Model Number | K12 |
| Model Year | 2025 |
| Native Resolution | 7680 x 4320 |
| Number of Component Outputs | 4 |
| Operating System | Windows 11 Pro |
| Personal Computer Design Type | Mini PC |
| Power Consumption | 54 Watts |
| Power Plug Type | Type B - 3 pin (North American) |
| Processor Brand | AMD |
| Processor Count | 8 |
| Processor Series | AMD Ryzen 7 |
| Processor Socket | TSMC 4nm FinFET |
| Processor Speed | 4.9 GHz |
| RAM Memory Installed | 32 GB |
| RAM Memory Technology | DDR5 5600MT/S |
| RAM Type | DDR5 RAM |
| Ram Memory Maximum Size | 96 GB |
| Resolution | 7680×4320 |
| Screen Size | 75 |
| Specific Uses For Product | Everyday Use, Gaming, Video Editing |
| Style Name | R7 H255 |
| Total Number of HDMI Ports | 1 |
| Total Usb Ports | 6 |
| Unit Count | 1.0 Count |
| Video Output | HDMI 2.1, DisplayPort 1.4, USB4 |
| Video Output Interface | DisplayPort, HDMI, Type-C, USB4 |
| Video Processor | AMD |
| Warranty Description | 1 year warranty |
| Wireless Compability | 2.4 GHz Radio Frequency, 5 GHz Radio Frequency, 5.8 GHz Radio Frequency, 802.11ax, Bluetooth |
| Wireless Network Technology | Bluetooth, Wi-Fi |
| Wireless Technology | Bluetooth, Wi-Fi |

## Product Details

- **Brand:** GMKtec
- **CPU Model:** AMD Ryzen 7
- **CPU Speed:** 4.9 GHz
- **Cache Size:** 32 GB
- **Graphics Card Description:** Integrated
- **Graphics Coprocessor:** AMD Radeon 780M 2600 MHz
- **Memory Storage Capacity:** 32 GB
- **Operating System:** Windows 11 Pro
- **Personal computer design type:** Mini PC
- **Specific Uses For Product:** Everyday Use, Gaming, Video Editing

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61VegLf9KhL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/7182EboW2YL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/7109Job4tvL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/71UdzoOfmoL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/61cEVQ6wu0L.jpg)

## Available Options

This product comes in different **Size** options.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-21*