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

Price: $999.99 - $769.98
(as of Feb 14, 2026 22:26:05 UTC – Details)

Buy GMKtec Gaming Mini PC, K12 AMD Ryzen 7 H 255 (Upgraded 8745HS) 32GB DDR5 RAM 2TB SSD, Desktop Computer 3X M.2 2280 Expansion, Oculink, Dual NIC 2.5G, HDMI 2.1, USB4 online from amazon or ebay or walmart GMKtec Gaming Mini PC, K12 AMD Ryzen 7 H 255 (Upgraded 8745HS) 32GB DDR5 RAM 2TB SSD, Desktop Computer 3X M.2 2280 Expansion, Oculink, Dual NIC 2.5G, HDMI 2.1, USB4

Product description

GMKtec K12 AMD Ryzen 7 H 255 (Turbo 4.9GHz, 8C/16T) 32GB DDR5+2TB

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 AMD Ryzen 7 H 255 Turbo 4.9GHz, 8C/16T Merchant Video

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

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 2TB 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. GMKtec K12 AMD Ryzen 7 H 255 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 svstem, 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.

1 AMD Ryzen 7 H 255

2 AMD Radeon 780M GPU

3 Dual RAM 3x Storage Slots

4 WIFI6E & Bluetooth5.2

5 Dual 2.5GbE LAN

1 OCuLink Port

2 Three Performance Modes

3 Rich Interfaces

4 Quad Screens 8K Display

5 Upgraded Cooling Fans

K12 Mini PC Package Contents

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 + 2TB SSD – The K12 mini computer is equipped with Dual 16GB (Total 32GB) SO-DIMM DDR5 5600MHz memory sticks. 2TB PCIe 4.0 SSD and 3x M.2 2280 expansion slots, each supporting up to 8TB (24TB max).
QUAD SCREEN 4K DISPLAY SUPPORT – EVO-T1 AI 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
FAST 2.5GBE + WIFI 6E + BT 5.2 – 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.
TRIPLE COOLING FANS WITH LIGHTING – Dual turbo CPU fans + a massive DDR5/SSD cooling fan deliver silent, ultra-efficient cooling (just 35dB in Quiet Mode!), while the 3 advanced heatpipes and 360° airflow keep your Ultra 9 285H 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