Buyer rule
Start with the training workflow
Start with framework support, multi-GPU strategy, GPU count, VRAM per GPU, motherboard lanes, slot spacing, PSU headroom, airflow, network speed, storage, and UPS coverage.

Multi-GPU training workstation
Multi-GPU training is a system-design problem. Software support, motherboard lanes, slot spacing, power connectors, airflow, heat, network transfer, storage, and UPS coverage need to be checked before buying extra GPUs.
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Buyer rule
Start with framework support, multi-GPU strategy, GPU count, VRAM per GPU, motherboard lanes, slot spacing, PSU headroom, airflow, network speed, storage, and UPS coverage.
Risk
The common mistake is buying two hot GPUs before checking software scaling, case clearance, slot spacing, power connectors, thermals, network transfer, and desk heat.
Amazon ML workstation lanes
Use these lanes after the framework, CUDA path, operating system, GPU memory, RAM target, dataset storage, scratch drive, cooling, power plan, and backup route are specific. Amazon has the live listing details, seller terms, shipping, returns, and exact product specifications.
System lane for buyers comparing complete workstations built around multiple graphics cards.
Board lane for PCIe slots, spacing, lanes, storage, memory, and workstation expansion.
Case lane for long GPUs, slot spacing, sustained load, intake fans, and service access.
Power lane after checking GPU count, CPU, drives, fans, cables, and connector requirements.
Transfer lane for datasets, checkpoints, NAS storage, remote access, and training output.
Power-protection lane for GPU towers, NAS, switches, routers, and long local runs.