Apple M5 Ultra 256GB Context Benchmark Shows Strong Prefill Speed on Quantized Qwen

antirez · x · 2026-10-03

Developer ivanfioravanti ran a first 256GB-context benchmark on an Apple M5 Ultra using DwarfStar, testing a q4-quantized Qwen 3.8 Flash Next on coding tasks. No optimizations yet, but he says the prefill speed is already impressive; he plans to tune and compare later. Hardware provided by @digitalix.

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