M5 Ultra Mac Studio first impressions: 2x faster Rust builds than M3 Ultra
BenBajarin · x · 2026-09-21
- Analyst Ben Bajarin amplified mweinbach's week-one impressions of the M5 Ultra Mac Studio: for the first time he could run many parallel subagents on cloud models without CPU bottlenecks.
- Rust compilation ran roughly 2x faster than on the M3 Ultra.
- On the 256GB version he recommends Qwen 3.8 Flash Next as the best model, saying it "rips"; a full report is coming.
Related event: M5 Ultra Mac Studio Hailed as the Dream Machine for Local AI Agents(6 posts)→
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