Mac Studio M5 Ultra: Local Model Citizen Outpaces DGX Spark and Threadripper (tomshardware.com)

That's to be expected from specs alone, no? The memory bandwidth is the culprit. The comparison is almost unfair for most inference, especially on a dense model.

I wrote more details about what's appropriate for a DGX Spark here: https://spark.enverge.ai/blog/dgx-spark-prefill-vs-decode

[disclosure: co-founder of the company linked]