Same RTX 5080, 70% slower: renting GPUs across regions can silently cost you speed
Grouchy_Television75 · reddit · 2026-09-07
A user running ComfyUI + Krea2 image generation on rented vast.ai GPUs found identical RTX 5080 cards performing very differently: a Vietnam machine took 12s per 1.0 MP image versus 7s on a US machine — about 70% slower with the same workflow and model.
nvidia-smi shows the card at full 250W power draw and 100% utilization with no obvious throttling, leaving the cause (cooling, power delivery, virtualization, driver) unclear. The author shares the full telemetry and asks for troubleshooting insight — a practical caution for anyone renting GPUs by the hour for local inference.
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