Build Report

Custom AI Rig Build — April 2026

Miami, Florida — Complete documentation of my multi-GPU AI inference rig. A 4x Nvidia GeForce RTX 3090 (24GB GDDR6X each, 96GB total VRAM) cluster built on Threadripper Pro platform for scalable, private LLM inference.

Started: April 2026
Status: In Progress
Estimated: $8-11k

Full Component List for 128GB Memory, 96GB Nvidia GPU, 24 core CPU - LOCAI AI Rig

Component Link
ASUS Threadripper Pro WX series Motherboard
Socket SP5, AMD WRX90E chipset
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CPU - AMD Ryzen Threadripper Pro 24-Core
24 cores / 24 threads, high performance workstation CPU
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Threadripper Pro CPU Cooler
Specific cooling solution for Threadripper Pro platform
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2TB SSD
High-speed storage for system and workloads
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Motherboard Mounting Plate
Adapter plate - Threadripper larger than ATX dimensions
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PCIe 2x16 Risers x2
PCIe riser cards for GPU mounting arrangement
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Nvidia GeForce RTX 3090 x4
24GB GDDR6X per GPU — 96GB total VRAM, primary compute accelerators
Product Page (Nvidia)
Open Air GPU Mining Rig Frame
8-slot open framework for multi-GPU setup
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Lian Li Edge Gold 850W PSU x2
80+ Gold, ATX 3.0 compatible, fully modular
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FURY Renegade Pro 128GB (4x32GB) DDR5-5600 ECC
Quad Channel, Registered, PC5-44800, CL28
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Corsair RS120 Magnetic Dome Fan Pack (3-Pack)
120mm Case Fan, Magnetic Dome Bearing, Black
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