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GMKtec Mini PC K12 AMD Ryzen 7 H 255 (Turbo 4.9GHz, 8C/16T) 32GB DDR5+1TB
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 Gaming Mini PC AMD Ryzen 7 H 255 Merchant Video
Upgraded Model with Oculink Port, Larger Cooling Fans and Quad Display Support! 
1 AMD Ryzen 7 H 255
2 Wifi 6+2.5G LAN+BT5.2
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) Graphics AMD Radeon 780M (12Core 2600 MHz) RAM 32GB Dual Channel (16GB*2) DDR5 5600 MT/S（MAX 128GB Support） ROM 1TB PCIe 4.0 3*M.2 2280 SSD NVME（MAX 24TB Support） 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 lnterface 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 Package Contents 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
OCuLink Port
1 OCuLink port 2 Quad Screens 8K 3 Upgraded Cooling Fan 4 128GB+24TB Expansion 5 Package Contents
GMKtec Mini PC Computers Built for You
Customer Reviews
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Price
$649.99$649.99
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CPU
AMD Ryzen 7 H 255
AMD Ryzen 7 5825U
AMD Ryzen7 PRO 6850H
AMD Ryzen7 7840HS
AMD Ryzen7 7840HS
MAX CPU Speed
4.9GHz
4.5GHz
4.7GHz
5.1GHz
5.1GHz
Cores / Threads
8C/16T
8C/16T
8C/16T
8C/16T
8C/16T
GPU
AMD Radeon 780M
AMD Radeon Graphics
AMD Radeon 680M
AMD Radeon 780M
AMD Radeon 780M
Pre-installed OS
11 Pro
11 Pro
11 Pro
11 Pro
11 Pro
RAM
32GB DDR5(16GB*2)
32GB DDR4(16GB*2)
16GB DDR5(8GB*2)
16GB DDR5(16GB*1)
32GB DDR5(16GB*2)
ROM
1TB MAX 24TB
512 GB MAX 4TB
1TB MAX 4TB
1TB MAX 2TB
1TB MAX 4TB
Memory Data Transfer Speed
5600 MT/s
3200 MT/s
4800 MT/s
5600 MT/s
5600 MT/s
Video Output
Quad MAX 8K Display
Triple MAX 4K Display
Quad MAX 8K Display
Triple MAX 4K Display
Quad MAX 8K Display
WiFi & Bluetooth
WiFi6E + BT5.2
WiFi6 + BT5.2
WiFi6 + BT5.2
WiFi6 + BT5.2
WiFi6 + BT5.2
Network
2*2.5Gbps
2*2.5Gbps
2*2.5Gbps
2*2.5Gbps
2*2.5Gbps
USB
3*USB3.2+2*USB2.0+TypeC+USB4
2*USB3.2 + 2*USB2.0+1*TypeC
2*USB3.2 + 2*USB2.0 +2*USB4
2*USB3.2 + 2*USB2.0+1*TypeC
2*USB3.2 + 2*USB2.0 +2*USB4
【AMD RYZEN 7 H 255】 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 + 1TB SSD】 GMKtec Mini PC K12 mini computer is equipped with Dual 16GB (Total 32GB MAX 128GB Support) SO-DIMM DDR5 5600MHz memory sticks. 1TB 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】GMKtec NUCBOX 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
