Introduction
The GMKtec Nucbox K8 Plus is a high-performance gaming mini PC designed for demanding tasks such as gaming, video editing, and multitasking. Powered by the AMD Ryzen 7 8845HS processor and featuring advanced connectivity options, this compact desktop computer offers robust capabilities in a small form factor. This manual provides essential information for setting up, operating, and maintaining your device.
What's in the Box
Please verify that all items listed below are included in your package:
- GMKtec Nucbox K8 Plus Mini PC
- Power Supply & Cable
- HDMI Cable
- VESA Mount and Screws
- User Manual (this document)
Image showing the contents of the GMKtec Nucbox K8 Plus retail packaging, including the mini PC, power supply, HDMI cable, VESA mount, and user manual.
Product Features and Hardware Overview
Processor and Memory
The Nucbox K8 Plus is equipped with an AMD Ryzen 7 8845HS processor, featuring 8 cores and 16 threads, capable of boosting up to 5.1GHz. It includes a 16MB L3 cache and operates within a 35-54W TDP range for efficient performance. The system comes with 64GB of DDR5 RAM running at 5600MHz, configured in dual 32GB channels. The RAM is expandable up to 96GB for enhanced multitasking capabilities.
Storage
A 1TB PCIe 4.0 M.2 SSD provides ultra-fast storage. The device features dual M.2 slots, allowing for storage expansion up to 8TB.
Internal view of the GMKtec Nucbox K8 Plus showing the dual DDR5 RAM slots and dual M.2 SSD slots, highlighting the upgradeability of memory and storage.
Graphics and Display Output
Integrated AMD Radeon 780M GPU, based on the RDNA3 architecture with 12 CUs (768 shaders) clocked up to 2700MHz, provides strong graphics performance for gaming and content creation. The mini PC supports up to four displays simultaneously with 4K/8K resolution output via two USB4 ports (40Gbps), one HDMI 2.1 port (8K@60Hz), and one DisplayPort 2.1 (8K@60Hz). The USB4 ports also support Power Delivery 3.0 and DP1.4.
Image illustrating the multi-display capabilities of the GMKtec Nucbox K8 Plus, showing connections to four screens via HDMI, DisplayPort, and dual USB4 ports.
Connectivity
The device features dual Intel i226V 2.5Gbps Ethernet ports for stable wired network connections. Wireless connectivity includes Wi-Fi 6 for high-speed, low-latency internet and Bluetooth 5.2 for peripheral connections. An Oculink interface is included for ultra-fast external connections, supporting storage expansion or external GPU upgrades.
Detailed view of the GMKtec Nucbox K8 Plus ports, including USB, HDMI, DisplayPort, 2.5G LAN, Oculink, and power input, showcasing its rich interface for various applications.
Cooling System and Performance Modes
An upgraded dual-fan cooling system with VC heat pipes ensures efficient thermal management. The PC offers three customizable performance modes: Silent mode (35W), Balanced mode (54W), and Performance mode (65W, peak 70W), allowing users to optimize for quiet operation or maximum power.
Exploded view of the GMKtec Nucbox K8 Plus's internal cooling system, highlighting the dual fans and VC heat pipes designed for efficient heat dissipation.
Setup Guide
Initial Connection
- Connect Display: Connect your monitor or display to the Mini PC using the provided HDMI cable or a compatible DisplayPort/USB4 cable.
- Connect Peripherals: Plug in your keyboard and mouse to the available USB ports.
- Connect Power: Connect the power supply to the DC IN port on the Mini PC, then plug the power cable into a wall outlet.
- Power On: Press the power button on the front of the Mini PC. The system will boot up automatically.
Operating System Setup
Your GMKtec Nucbox K8 Plus comes with Windows 11 Pro pre-installed and activated. Follow the on-screen instructions to complete the initial Windows setup, including language, region, network connection, and user account creation.
Note: For optimal performance, ensure your operating system and drivers are up to date. You can check for updates through Windows Update.
Operating Instructions
Performance Modes
The Nucbox K8 Plus offers three performance modes to suit your needs:
- Silent Mode (35W): Ideal for light tasks and quiet environments, minimizing fan noise.
- Balanced Mode (54W): Provides a good balance of performance and thermal management for everyday use.
- Performance Mode (65W, peak 70W): Maximizes CPU and GPU performance for demanding applications and gaming.
You can switch between these modes via the system's power settings or dedicated software (if provided by GMKtec).
General Usage Tips
- Multi-Display Setup: Utilize the multiple display outputs (HDMI, DisplayPort, USB4) to connect up to four monitors for enhanced productivity or immersive gaming.
- External GPU (Oculink): For extreme graphics performance, connect an external GPU enclosure via the Oculink port. Ensure the Mini PC is powered off before connecting/disconnecting the Oculink cable.
- Network Connectivity: Use the dual 2.5Gbps LAN ports for high-speed wired network access, or Wi-Fi 6 for reliable wireless connections.
Maintenance
System Updates
Regularly check for and install Windows updates, driver updates (especially for graphics and chipset), and BIOS updates to ensure optimal performance and security.
Cleaning
Keep the Mini PC's ventilation areas clear of dust and obstructions to maintain efficient cooling. Use compressed air to gently clean dust from the fan vents periodically.
Upgrades
The Mini PC is designed for easy upgrades. To upgrade RAM or SSDs, power off the device, disconnect all cables, and carefully open the chassis. Refer to the detailed instructions in the included user manual for specific steps.
Troubleshooting
- No Display: Ensure all display cables are securely connected and the monitor is set to the correct input source. Try a different cable or port.
- No Power: Verify the power adapter is correctly connected to both the Mini PC and the power outlet. Try a different outlet.
- Slow Performance: Check system resource usage (Task Manager in Windows). Close unnecessary applications. Ensure drivers are updated and cooling vents are clear. Switch to Balanced or Performance mode.
- Network Issues: For wired connections, check Ethernet cables and router status. For Wi-Fi, ensure the network is visible and the password is correct. Restart your router and the Mini PC.
- Oculink Connection: Always power off the Mini PC before connecting or disconnecting the Oculink cable to prevent damage.
Specifications
| Component | Detail |
|---|---|
| Processor | AMD Ryzen 7 8845HS (8C/16T, up to 5.1GHz) |
| Graphics | AMD Radeon 780M (up to 2700MHz) |
| RAM | 64GB DDR5 5600MHz (Expandable to 96GB) |
| Storage | 1TB PCIe 4.0 M.2 SSD (Dual slots, Max 8TB) |
| Network | Dual Intel i226V 2.5Gbps LAN, Wi-Fi 6, Bluetooth 5.2 |
| Video Output | 2x USB4 (4K/8K), 1x HDMI 2.1 (8K@60Hz), 1x DisplayPort 2.1 (8K@60Hz) |
| Other Ports | 2x USB 3.2 Gen2, 2x USB 2.0, 1x Oculink, 1x 3.5mm CTIA, 1x DC IN |
| Dimensions | 5.2 x 5 x 2.3 inches |
| Weight | 3.92 pounds |
Warranty and Support
Warranty Information
GMKtec offers a 1-year limited warranty for each Mini PC, starting from the date of purchase. All defects due to design and workmanship are covered. Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty claims, please contact GMKtec customer support:
- Amazon Support: Log in to your Amazon account, navigate to "Your Orders," and select "Product Question" for assistance.
- Email Support: Send an email to the After-Sales Team at support@gmktec.com.
- 24/7 Customer Support: GMKtec provides round-the-clock customer support to address your needs.
