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Overview

Experience elite power with the AMD Ryzen 7 H255 processor and Radeon 780M graphics. With 64GB DDR5 RAM and a 1TB PCIe 4.0 SSD, it handles intensive tasks and modern games effortlessly. Support quad 4K/8K displays and connect with ultra-fast 2.5GbE dual LAN, WiFi 6E, and an Oculink port for eGPU setups. Advanced dual-fan cooling ensures quiet, efficient operation. Backed by a 1-year GMKtec warranty.

GMKtec K12 Gaming Mini PC Oculink, Ryzen 7 H 255 (Upgraded 8745HS) 64GB DDR5 RAM 1TB SSD, Desktop Computer Radeon 780M Graphics, 3X M.2 2280 Storage Expansion, Dual NIC 2.5G, HDMI

Model: K12
Web Code: 19503534
Sold and shipped by | 4.6 seller rating (12 reviews)

Sale ends: *

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • 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

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

64GB DDR5 RAM + 1TB SSD - The K12 mini computer is equipped with Dual 32GB (Total 64GB) 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 -K12 Mini PC support 4-screen 4K/8K output via HDMI 2.1 (4K@120Hz), DisplayPort 1.4 (8K@120Hz), and USB Type-C Transfer speed (supporting PD/DP/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

Product Condition
Brand New

Base Features

Processor Type
AMD Ryzen 7 H 255 (8C/16T, Up to 4.9GHz, L3 16MB Cache, TDP35~70W)
Processor Speed
4.9 GHz
Processor Cores
8
Processor Cache
L3 16MB Cache
RAM Size
64 GB
Solid-State Drive Capacity
1024 GB
Graphics Card
AMD Radeon™ 780M

Inputs & Outputs

I/O Ports - Front
1* 3.5mm CTIA Port; 1*Power Mode Button; 1*Fan Light Mode Button; 1*Type-C (PD/DP/Data)； 2* USB 3.2 Gen2 (10Gbps) Port; 1*USB2.0;
I/O Ports - Back
1* 3.5mm CTIA Port; 1* USB 4.0 Port;1* HDMI 2.1 Port; 1* DP1.4 Port;1* USB 3.2 Gen2 (10Gbps) Port; 1*USB2.0; 2* RJ45 (2.5G LAN) Port；1*DC IN;1*OCulink（PCIE GEN*4)

Product Features

Colour
Black
Dimensions (cm)
0.92 (W) x 7.36 (H) x 15.1 (D) cm
Dimensions (in)
0.36 (W) x 2.9 (H) x 5.94 (D) in
Weight
0.92 kg
Weight (lbs)
2.03 lb

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

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Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • British Columbia (Remote)
  • Alberta (Remote)
  • Saskatchewan (Remote)
  • Manitoba (Remote)
  • Quebec (Remote)
  • New Brunswick (Remote)
  • Nova Scotia (Remote)
  • Prince Edward Island (Remote)
  • Newfoundland and Labrador (Remote)
  • Yukon
  • Northwest Territories
  • Nunavut
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
See our return policy to find specific return information for this product and steps on how to return by mail.