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Can a Mac Studio M4 Max (40c GPU) 64GB run d3 27B (vLLM Semantic Router, decision)?

Yes. d3 27B (vLLM Semantic Router, decision) fits in fast memory on Mac Studio M4 Max (40c GPU) 64GB at Q8_0 (32.3 GB needed, 48.0 GB usable), about 15 tok/s (estimate).

Hardware: Mac Studio M4 Max (40c GPU) 64GB · Model: d3 27B (vLLM Semantic Router, decision)

Mac Studio M4 Max (40c GPU) 64GB has 64 GB of unified memory and 546 GB/s of memory bandwidth. M4 Max (40c GPU) 64GB has the same memory and bandwidth, so the fit numbers match; this page is Mac Studio M4 Max (40c GPU) 64GB. The checker leaves macOS a share of unified memory, so Ollama can use 48.0 GB. d3 27B (vLLM Semantic Router, decision) (27B, vLLM Semantic Router) at Q8_0 is a 30 GB download and needs 32.3 GB with headroom for about 8k tokens.

Best quantQ8_0
Download size30 GB
Memory needed32.3 GB
Usable fast memory48.0 GB
Fitfits in fast memory
Estimated speed~15 tok/s (estimate)
Commandollama run d3:27b-q8_0
Open Mac Studio M4 Max (40c GPU) 64GB in the checker

Estimates, not benchmarks. Model sizes are ollama.com download sizes; memory needed adds headroom for ~8k tokens of context; speeds are rough figures from memory bandwidth. Data updated 2026-10-23.

A project by OnDevice Labs · llms.txt