Rig report
Mac Studio M5 Ultra (256GB)
256.0 GB memory · 1228 GB/s · 60 of 64 tracked models fit
Best model it can run
GLM-5.3 Flash (MoE)Runs great
Q3_K_M · 155.0 GB · 61–91 tok/s · capability 93/100
Fastest that fits: LFM2.5 1.2B at 115–172 tok/s
Compare against
vs NVIDIA RTX 6000 Ada (48GB) →vs NVIDIA RTX Pro 6000 Blackwell (96GB) →vs Mac Studio M5 Ultra (96GB) →vs MacBook Pro / Mac Studio M5 Max (128GB) →vs MacBook Pro / Mac Studio M4 Max (128GB) →vs NVIDIA DGX Spark (GB10, 128GB) →vs NVIDIA RTX 5090 (32GB) →vs MacBook Pro / Mac Studio M4 Max (48GB) →all comparisons →
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Estimates from device specs and model architectures, refined by community benchmarks. See the methodology.