Gigabyte AORUS RTX 5090 AI BOX

I'm considering the Gigabyte AORUS RTX 5090 AI BOX (external GPU, 32GB GDDR7, connects via Thunderbolt 5/USB4) as an alternative to building a desktop PC with an internal RTX 5090, specifically for running local LLMs.

Does anyone have real-world tokens/sec numbers comparing the AI BOX vs. a desktop RTX 5090 for popular models at various quantizations?