Sm120

The quant landscape sweep that ended at a 2.0bpw EXL3 pack built for exactly two RTX PRO 6000s, why 196B of Engram tables live on NVMe in every configuration that exists, what eager-mode serving actually measures (94-104 tok/s decode, 2.7K tok/s prefill), and the AM5 ceiling that keeps the last 15% of the recipe’s performance behind a RAM upgrade the platform cannot physically provide.

The uncensored build of DeepSeek’s Vision-Exp is a byte-for-byte drop-in — which meant every failure afterwards was mine to fix. A sparse-MLA kernel that rejects vision prefill on SM120, a streaming tool-call parser that corrupted exactly the arguments coding agents live on, and a health check that proved the port but not the model. 142 tok/s single-stream, native vision, zero refusals, one new router feature.