Why 273 GB/s? Less Is More, Until It Isn’t

[raphael.amorim]

That was my conclusion as well, because of economics and how it scales for training. And that’s been the case according to microcenter sales people

DGX Spark Multi-Node LLM Inference Report for Qwen3-235B model

Having a single spark is basically wasting $1500-$1700 infiniband module. Roughly 40% of the value.

DGX Spark Multi-Node LLM Inference Report for Qwen3-235B model

Talking to a worker at microcenter last night about how annoyingly hard it is to find the qsfp cables and he told me that he wishes nvidia just bundled the cable because no one ever just buys one spark.