1 GPU RTX 4090 RAG server Home Lab Build

This home lab system pairs 1x RTX 4090 24GB with AMD EPYC 9174F for document ingestion, embedding refresh jobs, and predictable retrieval response times. It uses serviceable air cooling with easy-access filters in a homelab-friendly tower chassis and is positioned in the under-5k planning tier, suited to owner-operated lab environments with direct physical access.

Use case

RAG server

Example system budget

$3,299 planning estimate (not live pricing).

Hardware breakdown

• GPU: 1x RTX 4090 24GB
• CPU: AMD EPYC 9174F
• RAM: 128GB DDR5
• Storage: 2TB Samsung 990 PRO NVMe + 8TB enterprise SSD tier
• PSU: 1200W 80+ Gold

What This Build Includes

Includes:

• GPU(s)
• CPU
• RAM
• Storage
• Motherboard

Not Included:

• Case / chassis
• Cooling system
• Power cables / adapters
• Peripherals

Deployment Notes

• High-power multi-GPU systems require proper airflow
• Ensure PSU headroom for GPU transient spikes
• Verify motherboard PCIe lane and spacing compatibility
• Suitable for workstation or rack environments