M5 Ultra 256GB: Real-World Performance & 671B Model Local Inference Tested
Apple's M5 Ultra 256GB Mac Studio delivers 35-40% higher multi-core performance than M2 Ultra, 1024 GB/s memory bandwidth, and uniquely fits 671B parameter models like DeepSeek-R1 locally at 10-15 tokens/sec, though it's overkill for general creative work.
