Lao Guo's Learning Space
Sep 22, 2026 · Industry Insights
M5 Ultra 256GB Benchmarks: 27B LLM 51 tok/s, GPU +82% in Cyberpunk 4K RT
Hands-on benchmarks of the M5 Ultra 256GB Mac Studio show 45.7% faster single-stream LLM decoding, 3.6x higher multi-user prefill throughput, 43.6% CPU multi-core gains, 67.8% GPU improvement, and 82.8% higher Cyberpunk 2077 4K ray-tracing frame rates versus M3 Ultra, with purchasing guidance.
GPU performanceLLM inferenceM3 Ultra
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