Engineering notes

Things we measured ourselves, on hardware we actually run — GPUs, LLM serving, and the plumbing that connects them. No republished benchmarks, no vendor slides.

A 32 GB GPU on the end of a USB‑4 cable: what an eGPU really costs for LLM serving

2026-08-26 · Hardware

We hung an Intel Arc Pro B70 off a mini PC through a Thunderbolt enclosure and served a 30B model from it. Decode barely noticed the cable. Cold-loading a model was a different story — and the reason why is a 256 MB porthole most people never hit.