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Compact silver-and-black mini PC with rounded edges

GMKtec

GMKtec M8 16+512 barebone mini PC

SKU CH-K57J-YF0JP

Barebone mini PC with AMD Ryzen 5 PRO 6650H, 16 GB LPDDR5, 512 GB NVMe, Oculink and USB4 for eGPU expansion

  • ProcessorAMD Ryzen 5 PRO 6650H (6C/12T, Up to 4.5 GHz, L2 3 MB L3 16
  • Form factorMini pc
  • Wi-Fi standardWiFi 6E
  • Processor socketTSMC 6 nm FinFET
  • Processor cores6-Core
  • ChipsetIntegrated
  • AMD Ryzen 5 PRO 6650H delivers 6 cores and 12 threads up to 4.5 GHz for responsive multitasking
  • 16 GB LPDDR5 6400 MT/s soldered memory provides high bandwidth for integrated graphics workloads
  • 512 GB PCIe 4.0 NVMe SSD plus dual M.2 2280 slots allow up to 8 TB total storage expansion
  • Oculink PCIe 4.0 x4 and USB4 40 Gbps ports enable external GPU and high-speed peripheral connectivity
  • Triple display via HDMI 2.1, DisplayPort 1.4 and USB4 with dual 2.5 GbE LAN and WiFi 6E

Ready-to-use mini PC for office and light gaming

The GMKtec M8 is a compact barebone system pre-loaded with Windows 11 Pro. An AMD Ryzen 5 PRO 6650H processor with 6 cores and 12 threads runs at 3.3 GHz base and up to 4.5 GHz boost. Integrated Radeon 660M graphics with 12 compute cores handle daily productivity, mid-range gaming and light 4K video editing. Sixteen gigabytes of LPDDR5 6400 MT/s memory are soldered to the board and cannot be upgraded.

Verify expansion needs

Dual M.2 2280 slots accept PCIe 3.0 or 4.0 NVMe drives up to 4 TB each for 8 TB total storage. The Oculink port provides a PCIe 4.0 x4 link for an external GPU but does not support hot-plugging; the unit must be powered off before connecting or disconnecting. A full-featured USB4 port delivers 40 Gbps data, 100 W power delivery and 4K 60 Hz video. Dual 2.5 GbE LAN ports and WiFi 6E are built in for wired and wireless networking.

Three BIOS power modes balance thermals and noise

Quiet mode caps the processor at 28 W, Balanced at 35 W and Performance at 40 W. A dual-fan cooler with 360° airflow and copper heat pipes keeps temperatures low across all settings. Triple simultaneous display output is available through HDMI 2.1, DisplayPort 1.4 and USB4. Multiple USB 3.2 Gen 2 10 Gbps ports provide fast peripheral connectivity.

How it compares

Measured against everything we stock in Mini PC Barebone Systems, at today’s prices. Recalculated every night.

Price $262.99
Cheaper than about 85% of the 1,735 comparable items (median $564.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameGMKtec
Product lineM8
Model nameM8 16+512
Part numberM8 16+512
Product colorSilver Black(M8)
Processor
ProcessorAMD Ryzen 5 PRO 6650H (6C/12T, Up to 4.5 GHz, L2 3 MB L3 16 MB Cache)
Processor socketTSMC 6 nm FinFET
Processor cores6-Core
ChipsetIntegrated
Memory
Installed memory16 GB LPDDR5
RAM slotsOn-Board (Non-Upgradable)
Supported memoryLPDDR5 6400MT/s
Maximum supported memory16 GB
Dual-channel supportYes
Storage
Installed storage512 GB PCIe 3.0 NVMe SSD
M.2 slotsDual M.2 2280 PCIe 3.0/4.0 Slots, Up to 8 TB per slot (16 TB total)
Graphics
Built-in graphicsAMD Radeon 660M 6 Cores 1900 MHz
Audio & video
Built-in audioIntegrated HD Audio
Channel countStereo
Connectivity
LAN connectionDual 2.5 Gbit/s RJ45 Ethernet (RTL8125BG)
Maximum network speed2.5 Gbit/s
Wi-Fi standardWIFI 6E 802.11 a/b/g/n/ac/ax RZ616
Bluetooth supportBT5.2
Ports & slots
Front USB ports2 x USB3.2 Gen2 (10 Gbit/s), 1 x USB4 (40 Gbit/s, PD Charging, DP 1.4)
Front audio jacks1 × 3.5 mm CTIA Audio Jack
Other front ports1 x Oculink (PCIe Gen4 x4)
HDMI ports2.1 (8K@60 Hz)
DisplayPort connectors1.4 (8K@60 Hz)
Rear USB ports1 x USB3.2 Gen2 (10 Gbit/s), 1 x USB2.0 (480 Mbit/s)
Ethernet port2 × 2.5 Gbit/s Ethernet Ports
InputDC 20 V 5A, 100 W Max
Size & build
Form factorMini pc
Product dimensions4.21 in × 4.37 in × 2.48 in
Product weight0.49kg
More details
South bridgeAMD Integrated Controller Hub
PCIPCIe 3.0/4.0 x4 (for M.2 NVMe)
Additional detailsDual M.2 2280 PCIe 3.0/4.0 Slots

Questions about this item

What comes in the box and what must be purchased separately?

The unit ships with the mini PC, a 100W power adapter and a VESA mount. Windows 11 Pro is pre-installed. The 16GB LPDDR5 RAM is soldered and cannot be upgraded. A 512GB PCIe 4.0 NVMe SSD is installed; a second M.2 2280 slot is empty for additional storage.

Which version should I choose if I need more storage later?

Only the M8 16+512 model is listed. It already includes 16GB LPDDR5 and a 512GB NVMe SSD. Two M.2 2280 slots support up to 4TB each (8TB total), so you can add one or two drives later without replacing the original.

What does the 4.5GHz boost clock mean for real workloads?

The Ryzen 5 PRO 6650H reaches 4.5GHz on up to 6 cores / 12 threads. Combined with Radeon 660M graphics (12 compute cores) and 16GB LPDDR5 6400MT/s, it handles office apps, mid-range gaming and light 4K video editing. Three BIOS power modes (28W, 35W, 40W) let you balance noise and speed.

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