MacBook Neo A18 Pro 8GB vs DGX Spark (GH200 480GB) for Local LLMs

The DGX Spark (GH200 480GB) has about 733% more memory bandwidth (500 vs 60 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 733% faster on the DGX Spark (GH200 480GB). The DGX Spark (GH200 480GB) fits more of the catalog at Q4/8K — 60 vs 11 of 67 models (480 vs 8 GB VRAM). Largest model that fits the DGX Spark (GH200 480GB) but not the MacBook Neo A18 Pro 8GB: NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4 (550.0B). MSRP is $0 for the MacBook Neo A18 Pro 8GB vs $3,000 for the DGX Spark (GH200 480GB). 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 (36 shared models), the DGX Spark (GH200 480GB) posts the higher tok/s in 36 rows vs 0. Methodology.

Spec comparison

	MacBook Neo A18 Pro 8GB	DGX Spark (GH200 480GB)
Vendor	Apple	NVIDIA
VRAM	8 GB	480 GB
Memory type	LPDDR5X	LPDDR5X
Memory bandwidth	60 GB/s	500 GB/s
TDP	20 W	170 W
MSRP (list)	$0	$3,000
Buy	Search Amazon	Search Amazon

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 36 shared models

Model	Params (B)	MacBook Neo A18 Pro 8GB tok/s	MacBook Neo A18 Pro 8GB fits	DGX Spark (GH200 480GB) tok/s	DGX Spark (GH200 480GB) fits	Winner
MiniCPM5-1B	1.08	70.0 est.	Yes	421.8 est.	Yes	DGX Spark (GH200 480GB)
Qwen3.5-2B	2.0	37.8 est.	Yes	227.8 est.	Yes	DGX Spark (GH200 480GB)
Qwen3.6-35B-A3B	36.0	2.6 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
Qwen3.5-35B-A3B	34.7	2.8 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
GLM-4.7-Flash	31.2	2.5 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
Qwen3-30B-A3B-Instruct-2507	30.5	3.3 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16	30.0	3.5 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
Ornith-1.0-35B	35.0	2.7 est.	No	151.8 est.	Yes	DGX Spark (GH200 480GB)
Llama-3.2-3B-Instruct	3.2	23.6 est.	Yes	142.4 est.	Yes	DGX Spark (GH200 480GB)
gpt-oss-20b	21.5	5.7 est.	No	126.5 est.	Yes	DGX Spark (GH200 480GB)
gemma-4-26B-A4B-it	25.2	3.9 est.	No	119.9 est.	Yes	DGX Spark (GH200 480GB)
Nanbeige4.2-3B	4.0	19.2 est.	Yes	116.0 est.	Yes	DGX Spark (GH200 480GB)
Qwen3-4B-Instruct-2507	4.0	18.9 est.	Yes	113.9 est.	Yes	DGX Spark (GH200 480GB)
NVIDIA-Nemotron-3-Nano-4B-BF16	4.0	18.9 est.	Yes	113.9 est.	Yes	DGX Spark (GH200 480GB)
Qwen3-4B-Thinking-2507	4.0	18.9 est.	Yes	113.9 est.	Yes	DGX Spark (GH200 480GB)

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

	MacBook Neo A18 Pro 8GB	DGX Spark (GH200 480GB)
Catalog models that fit	11 of 67	60 of 67
Largest exclusive fit	—	NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4 (550.0B)

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