Arc Pro B70 32GB vs Mac mini M4 Pro 64GB for Local LLMs

The Arc Pro B70 32GB has about 123% more memory bandwidth (608 vs 273 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 123% faster on the Arc Pro B70 32GB. The Mac mini M4 Pro 64GB fits more of the catalog at Q4/8K — 44 vs 39 of 69 models (64 vs 32 GB VRAM). Largest model that fits the Mac mini M4 Pro 64GB but not the Arc Pro B70 32GB: Qwen3-Next-80B-A3B-Instruct (81.3B). MSRP is $999 for the Arc Pro B70 32GB vs $2,199 for the Mac mini M4 Pro 64GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. In the Q4/8K head-to-head below (53 shared models), the Arc Pro B70 32GB posts the higher tok/s in 44 rows vs 9. Methodology.

Spec comparison

	Arc Pro B70 32GB	Mac mini M4 Pro 64GB
Vendor	Intel	Apple
VRAM	32 GB	64 GB
Memory type	GDDR6	LPDDR5X
Memory bandwidth	608 GB/s	273 GB/s
TDP	225 W	155 W
MSRP (list)	$999	$2,199
Buy	Search Amazon (affiliate)	Search Amazon (affiliate)

MSRP is the launch list price, not live retail. Buy links are Amazon affiliate links — the price after you click is the live price.

Q4 / 8K head-to-head — top 15 of 53 shared models

Model	Params (B)	Arc Pro B70 32GB tok/s	Arc Pro B70 32GB fits	Mac mini M4 Pro 64GB tok/s	Mac mini M4 Pro 64GB fits	Winner
MiniCPM5-1B	1.08	358.2 est.	Yes	160.9 est.	Yes	Arc Pro B70 32GB
Qwen3.5-2B	2.0	193.5 est.	Yes	86.9 est.	Yes	Arc Pro B70 32GB
Qwen3-Coder-Next	79.7	186.8 est.	No	57.9 est.	Yes	Arc Pro B70 32GB
Qwen3-Next-80B-A3B-Instruct	81.3	179.7 est.	No	57.9 est.	Yes	Arc Pro B70 32GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx	2.3	168.2 est.	Yes	75.5 est.	Yes	Arc Pro B70 32GB
Qwen3.6-35B-A3B	36.0	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
Qwen3.5-35B-A3B	34.7	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
GLM-4.7-Flash	31.2	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
Qwen3-30B-A3B-Instruct-2507	30.5	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16	30.0	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
Ornith-1.0-35B	35.0	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
qwen35b-a3b-fable-sft-abliterated	34.7	129.0 est.	Yes	57.9 est.	Yes	Arc Pro B70 32GB
Llama-3.2-3B-Instruct	3.2	120.9 est.	Yes	54.3 est.	Yes	Arc Pro B70 32GB
gpt-oss-20b	21.5	107.5 est.	Yes	48.3 est.	Yes	Arc Pro B70 32GB
gemma-4-26B-A4B-it	25.2	101.8 est.	Yes	45.7 est.	Yes	Arc Pro B70 32GB

est. = bandwidth-based estimate; measured = curated real benchmark that overrides the estimate. Fits = weights + KV(8K) + 1 GB overhead ≤ 95% of VRAM.

Fit coverage at Q4 / 8K

	Arc Pro B70 32GB	Mac mini M4 Pro 64GB
Catalog models that fit	39 of 69	44 of 69
Largest exclusive fit	—	Qwen3-Next-80B-A3B-Instruct (81.3B)

Arc Pro B70 32GB details → · Mac mini M4 Pro 64GB details →