Can Mac Studio M5 Ultra 256 GB run Nemotron 3.5 Bolt 74B-A9B?

256 GB unified · 1228 GB/s memory bandwidth · Nemotron 3.5 Bolt 74B-A9B has 74B parameters (9B active per token).

Short answer

Yes, excellent for chat and acceptable or better for every workload we test.

Best quantization for chat: 4-bit (39 GB of weights) on LM Studio. Generation: 70–120 tok/s, leaving about 206 GB free for your other apps.

How it rates for each workload

Same model and machine, different jobs. Agents and long documents send far bigger prompts than chat, so they need much more speed and memory.

Workload	Verdict	Quant	Generation	First reply	Context
Chatwith Open WebUI	Excellent	4-bit	70–120 tok/s	under 1 s	8K	Details
Coding questionswith Continue	Excellent	4-bit	70–110 tok/s	≈1 s	16K	Details
Coding in a repositorywith Aider	Acceptable	4-bit	65–110 tok/s	≈4 s	32K	Details
Agentic codingwith OpenCode	Acceptable	4-bit	65–110 tok/s	≈5 s	32K	Details
Long documents (64K)with Open WebUI	Excellent	4-bit	65–100 tok/s	≈15 s	64K	Details

Speeds are bandwidth-based estimates; no direct benchmark exists for this pair. “First reply” is the time to read the workload’s opening prompt. How we calculate

Other models for Mac Studio M5 Ultra 256 GB

The best-rated models for chat on this machine.

Everything Mac Studio M5 Ultra 256 GB can run

Cheapest machines for Nemotron 3.5 Bolt 74B-A9B

Hardware rated comfortable or better for chat, lowest price first.

Same chip, other memory: 128 GB, 512 GB

Different tool, context size or workload?

These pages use typical settings. The full check models your exact setup.

Check my exact setup