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Apple M1 Max (24-core GPU) vs Apple M3 Max (40-core GPU) for local LLMs

Across 6 tests measured on both, the Apple M3 Max (40-core GPU) is faster in 6 and generates a median 1.17× the tokens/s of the Apple M1 Max (24-core GPU).

On Llama 2 7B (F16, llama-bench) the Apple M1 Max (24-core GPU) generates 22.6 tokens/s and the Apple M3 Max (40-core GPU) 25.1 tokens/s (measured).

Same model, same quant, same test

ModelQuant / testM1 Max (24-core GPU)
tok/s		M3 Max (40-core GPU)
tok/s		FasterSources and run details
Llama 2 7BF16
llama-bench		22.6
Metal		25.1
Metal		M3 Max (40-core GPU) +11%llama.cpp #4167 M1 Max (24-core GPU) · llama.cpp #4167 M3 Max (40-core GPU)
Llama 2 7BQ4_0
llama-bench		54.6
Metal		66.3
Metal		M3 Max (40-core GPU) +21%llama.cpp #4167 M1 Max (24-core GPU) · llama.cpp #4167 M3 Max (40-core GPU)
Llama 2 7BQ8_0
llama-bench		37.8
Metal		42.8
Metal		M3 Max (40-core GPU) +13%llama.cpp #4167 M1 Max (24-core GPU) · llama.cpp #4167 M3 Max (40-core GPU)
Llama 3.1 8B InstructQ4_K_M
LocalScore		32.1
llamafile		35.6
llamafile		M3 Max (40-core GPU) +11%LocalScore M1 Max (24-core GPU) · LocalScore M3 Max (40-core GPU)
Llama 3.2 1B InstructQ4_K_M
LocalScore		99.8
llamafile		146
llamafile		M3 Max (40-core GPU) +47%LocalScore M1 Max (24-core GPU) · LocalScore M3 Max (40-core GPU)
Qwen2.5 14B InstructQ4_K_M
LocalScore		16.7
llamafile		23.6
llamafile		M3 Max (40-core GPU) +42%LocalScore M1 Max (24-core GPU) · LocalScore M3 Max (40-core GPU)

Generation speed in tokens/s, best measured backend for each chip (shown under the number). Backends can differ between the two chips; check them before drawing conclusions. Measured results only, nothing estimated.

Specs

Apple M1 Max (24-core GPU)Apple M3 Max (40-core GPU)
MemoryUnified memoryUnified memory
Memory bandwidth400 GB/s400 GB/s

All results for the Apple M1 Max (24-core GPU) · All results for the Apple M3 Max (40-core GPU) · More comparisons