GPUs & Macs › Apple M1 Ultra (48-core GPU)

Apple M1 Ultra (48-core GPU): local LLM speed

Llama 2 7B (Q4_0) generates 74.9 tokens/s on the Apple M1 Ultra (48-core GPU) (Metal), and processes prompts at 772 tokens/s.

Measured results

Model	Generate tok/s	Prompt tok/s	Quant	Backend	Test	Source
Llama 2 7B	74.9	772	Q4_0	Metal FA off	tg128	llama.cpp #4167 details
Llama 2 7B	55.7	783	Q8_0	Metal FA off	tg128	llama.cpp #4167 details
Llama 2 7B	33.9	876	F16	Metal FA off	tg128	llama.cpp #4167 details
Llama 3.2 1B Instruct	138	2,582	Q4_K_M	llamafile	LocalScore avg	LocalScore details
Llama 3.1 8B Instruct	48.9	534	Q4_K_M	llamafile	LocalScore avg	LocalScore details
Qwen2.5 14B Instruct	27.8	290	Q4_K_M	llamafile	LocalScore avg	LocalScore details

Vendor	Apple
Memory	Unified (depends on configuration)
Memory bandwidth	800 GB/s
GPU cores	48
Spec source	Wikipedia (Apple M1)
Spec note	theoretical 819.2

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What fits on the Apple M1 Ultra (48-core GPU)

Estimates for this chip are scaled from a measured run: Llama 2 7B F16 at 33.9 tok/s (Metal, source). Fit assumes the whole model in GPU memory with ~8K context.

With 16 GB unified memory

Model	Best quant that fits	File	Expected tok/s
Qwen3.8-27B	UD-IQ2_XXS	7.3 GB	62.9 estimate
gemma-4-12B-it	Q6_K	9.8 GB	46.7 estimate
Qwen3.5-9B	Q8_0	9.5 GB	48.0 estimate
Qwen3.5-4B	Q8_0	4.5 GB	102 estimate
Qwen3.6-35B-A3B	UD-IQ1_M	10.0 GB	265 estimate
gemma-4-26B-A4B-it	UD-IQ2_M	10.0 GB	148 estimate
MiMo-V2.6-Distill-Qwen-9B	Q8_0	9.5 GB	47.9 estimate
gemma-4-E4B-it	Q8_0	8.2 GB	55.8 estimate

With 36 GB unified memory

Model	Best quant that fits	File	Expected tok/s
Qwen3.8-27B	UD-Q6_K	22.0 GB	20.8 estimate
gemma-4-12B-it	Q8_0	12.7 GB	36.1 estimate
Qwen3.5-9B	Q8_0	9.5 GB	48.0 estimate
Qwen3.5-4B	Q8_0	4.5 GB	102 estimate
Qwen3.6-35B-A3B	UD-Q5_K_S	24.9 GB	107 estimate
gemma-4-26B-A4B-it	UD-Q6_K	23.2 GB	64.1 estimate
MiMo-V2.6-Distill-Qwen-9B	Q8_0	9.5 GB	47.9 estimate
gemma-4-E4B-it	Q8_0	8.2 GB	55.8 estimate

With 64 GB unified memory

Model	Best quant that fits	File	Expected tok/s
Qwen3.8-27B	Q8_0	29.0 GB	15.7 estimate
gemma-4-12B-it	Q8_0	12.7 GB	36.1 estimate
Qwen3.5-9B	Q8_0	9.5 GB	48.0 estimate
Qwen3.5-4B	Q8_0	4.5 GB	102 estimate
Qwen3.6-35B-A3B	Q8_0	36.9 GB	72.3 estimate
gemma-4-26B-A4B-it	Q8_0	26.9 GB	55.3 estimate
MiMo-V2.6-Distill-Qwen-9B	Q8_0	9.5 GB	47.9 estimate
gemma-4-E4B-it	Q8_0	8.2 GB	55.8 estimate

With 128 GB unified memory

Model	Best quant that fits	File	Expected tok/s
Qwen3.8-27B	Q8_0	29.0 GB	15.7 estimate
gemma-4-12B-it	Q8_0	12.7 GB	36.1 estimate
Qwen3.5-9B	Q8_0	9.5 GB	48.0 estimate
Qwen3.5-4B	Q8_0	4.5 GB	102 estimate
Qwen3.6-35B-A3B	Q8_0	36.9 GB	72.3 estimate
Qwen3.8-Flash-Next	UD-IQ3_XXS	82.0 GB	5.6 estimate
gemma-4-26B-A4B-it	Q8_0	26.9 GB	55.3 estimate
MiMo-V2.6-Distill-Qwen-9B	Q8_0	9.5 GB	47.9 estimate

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Similar hardware

Apple M1 (7-core GPU) · Apple M1 (8-core GPU) · Apple M1 Pro (14-core GPU) · Apple M1 Pro (16-core GPU) · Apple M1 Max (24-core GPU) · Apple M1 Max (32-core GPU) · Apple M1 Ultra (64-core GPU) · Apple M2 (8-core GPU)