High-performance workstation specifically engineered and optimized for LLM inference, n8n automation workflows, and Open WebUI testing. This build features quality components selected for thermal stability, power efficiency, and reliability.

Key Highlights:

• Usage History: Regularly used for inference and local AI stack testing. No heavy fine-tuning or mining.
• Current Production Setup: Currently running Qwen3-14B (FP8), ensuring a massive KV Cache for long-context windows.
• Warranty/Proof of Purchase: Invoices for both GPUs are included (December and January)
• Plug & Play: Delivered with a functional Docker environment.

Detailed Specifications:

• GPUs: 2x Gigabyte RTX 5070 Ti SFF Windforce (16GB each | 32GB Total VRAM). SFF design chosen for superior airflow in dual-GPU configuration.
• Power Supply: Seasonic 1600W Platinum ATX 3.0. Native ATX 3.0 support with massive overhead.
• Motherboard: ASRock X399 Taichi. Industrial-grade VRM cooling with 64 PCIe lanes, ensuring both GPUs run at full bandwidth.
• CPU: AMD Threadripper 1920X (12C/24T).
• Cooling: Noctua NH-U14S TR4-SP3 (Brand new unit).
• RAM: 32GB DDR4 (4x8GB) 2400MHz. Selected for low power consumption and thermal efficiency.
• Storage: Samsung 860 Evo 512GB SSD.
• Case: Fractal Design Meshify 2.

Software Optimization & Support:

• SGLang Stack: Pre-configured Docker environment optimized for high-throughput inference via API access.
• Advanced Parallelization: Tensor Parallelism (TP=2) is enabled and optimized within SGLang to fully leverage both GPUs for faster inference and larger model support.
• Complete Documentation: Full installation and configuration documentation for the stack will be provided to the buyer.
• Network Ready: Nginx Proxy Manager pre-installed for easy management of web interfaces and secure access.
• Efficiency Tuning: Custom Power Limits applied to both CPU and GPUs for the best performance-per-watt ratio.
• Versatility: Perfect for n8n, Open WebUI, ComfyUI, and QLoRA (Note: reconfiguration required for the latter two).

Price: €3.000

Pickup only

Legal Note: This is a private sale from an individual to another individual (Vente de particulier à particulier). The system is sold as-is, and the sale does not include a professional commercial warranty or a right of withdrawal. However, original invoices for the GPUs are provided for manufacturer warranty purposes