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SpacemiT K3 Pico-ITX Review: 60-TOPS RISC-V Powerhouse for LLMs?

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By androidpimp on June 2, 2026 Embedded Computers
SpacemiT K3 Pico ITX
SpacemiT K3 Pico ITX
Table of contents
  1. Part I: An Introduction to the SpacemiT K3 RISC-V Series Boards
  2. Why โ€œcapable of running 30B parameter LLMsโ€ is a big deal?
  3. 1๏ธโƒฃSpacemiTย K3ย high-performanceย RISC-Vย processorย 
    1. The K3 is a cutting-edge, high-performance RISC-V CPU built for advanced AI applications.
    2. Target market
    3. Main Highlights
  4. Completely compliant with the RVA23 profile.
    1. What is RVA23 and why is it important?
    2. Whatโ€™s inside RVA23?
  5. Why developers care?
    1. In one sentence
  6. Hereโ€™s a closer look at the full range of capabilities offered by the SpacemiT K3:
  7. 2๏ธโƒฃK3 Pico-ITX single board computer (Also known as Milk-V Jupiter 2)
  8. Specifications
  9. 3๏ธโƒฃSpacemiT K3-CoM260 Developer Kit
    1. A Full-Stack RISC-V Robotics Development Kit
  10. Key Features
  11. Extensive software compatibility
    1. OS compatibility now includes Ubuntu 26.04 with support for RISC-V architecture.
    2. Official mainline Ubuntu support.
  12. Extra support through official partner channels
    1. What about official OpenWrt mainline support?
  13. Supporting the Spine Triton kernel development system
    1. Why does SpacemiT care about Triton?
  14. Hardware designed to work with AI agents
  15. Platforms that are already compatible with the K3 architecture.
  16. RISC V AI Accelerationย in 2026: How SpacemiT K3 Challenges Jetson at the Edge
    1. SpacemiT K3 vs NVIDIA Jetson Series โ€“ Performance Comparison
  17. Part II: SpacemiT K3 Pico-ITX Review
    1. The Package
  18. Package Contents (Unboxing)
  19. Design-wise
  20. Storage Space โ€“ What You Need to Know!
  21. How much internal storage comes with the 16GB RAM model?
    1. โญย 128โ€ฏGB total capacity!
    2. How much space do we have available, and how much is left to use?
  22. How to install an NVMe SSD
    1. Checking for drives and partitions
    2. Performance benchmarks
    3. What do p80, p90, p95, and p99 latency mean?
    4. Test Results In plain language:
  23. Checking temperatures
  24. Software Support
    1. How do I flash the firmware to set up a new operating system?
    2. Pre-installed software
  25. Available usable RAM
    1. Compatibility with Tailscale
      1. Step 1: Installing Tailscaleย for a riscv64 architecture environment
      2. Step 2: Enabling and starting the Tailscale service
      3. Step 3: Checking that itโ€™s running
      4. Step 4: Authenticating our device
  26. Better and more cost-effective?
    1. Chinese companies are great at keeping costs low, but is their hardware actually better than Nvidiaโ€™s?
  27. Architecture: Heterogeneous vs. Homogeneous Fusion
    1. Nvidia design philosophy
    2. SpacemiT K3ย design philosophy
    3. Conclusion: Better is Relative
      1. Is the hardware actually better?
  28. System performance benchmarks
    1. Key takeaways
    2. Key Takeaways
  29. Running the official llama.cpp benchmark tool (llama-bench)
    1. Running our test
    2. Our test script
    3. Why did we pick this model?
    4. LLaMA-3 8B Q4_K_M โ€” Spacemit K3 vs Mac mini (16โ€ฏGB RAM) + Estimated Prices (USD)
    5. Final Conclusions:
      1. What do the results mean?
    6. What kinds of AI language models can operate on this device?
      1. What does this mean from a userโ€™s standpoint?
    7. Unified LLM Compatibility Table (16GB RAM Pico ITX)
  30. Connectivity
    1. Wireless connectivity
    2. How is the performance?
    3. What about support for cellular modems?
  31. Setting up our 10Gb RJ45 SFP+ module
    1. iPerf3 network throughput Speed Test
    2. โญQuick Takeaways from our test results
      1. The bottom line
    3. We also took a look at the CPU usage of the K3 Pico-ITX.
      1. Key Observations from the Metrics:
    4. Improving performance by optimizing operating system governors
  32. Power requirements
  33. Usable Interfaces
  34. Final verdict
    1. Price wise
    2. Places to buy
    3. SPACEMIT K3 Pico-ITX RISC-V Development Board

Usable Interfaces

On the back of the K3 Pico ITX device, you’ll find an SFP+ port, a 1Gb Ethernet port, four USB ports, an OTG port, and a DP port. SpacemIT also threw in a USB hub with our kit, which hooks up to the DP (DisplayPort) and adds three extra USB 2.0/1.1/1.0 host ports plus an HDMI output.

K3 Pico ITX Interfaces
K3 Pico ITX Interfaces
K3 Pico ITX Interfaces 1
K3 Pico ITX Interfaces 1
K3 Pico ITX Interfaces 2
K3 Pico ITX Interfaces 2
K3 Pico TX Interfaces
K3 Pico TX Interfaces
1 2 3 4 5 6 7 8 9 10 11 12 13
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