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Can a Mac Studio M5 Ultra (64c GPU) 256GB run Nemotron 3.5 Super 120B-A12B (MoE)?

Yes. Nemotron 3.5 Super 120B-A12B (MoE) fits in fast memory on Mac Studio M5 Ultra (64c GPU) 256GB at Q8_0 (135.7 GB needed, 192.0 GB usable), about 36 tok/s (estimate).

Hardware: Mac Studio M5 Ultra (64c GPU) 256GB · Model: Nemotron 3.5 Super 120B-A12B (MoE)

Mac Studio M5 Ultra (64c GPU) 256GB has 256 GB of unified memory and 1200 GB/s of memory bandwidth. Mac Studio M5 Ultra (80c GPU) 256GB has the same memory and bandwidth, so the fit numbers match; this page is Mac Studio M5 Ultra (64c GPU) 256GB. The checker leaves macOS a share of unified memory, so Ollama can use 192.0 GB. Nemotron 3.5 Super 120B-A12B (MoE) (120B, 12B active, NVIDIA) at Q8_0 is a 133 GB download and needs 135.7 GB with headroom for about 8k tokens.

Best quantQ8_0
Download size133 GB
Memory needed135.7 GB
Usable fast memory192.0 GB
Fitfits in fast memory
Estimated speed~36 tok/s (estimate)
Commandollama run nemotron-3.5-super:120b-a12b-q8_0
Open Mac Studio M5 Ultra (64c GPU) 256GB 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