DGX Spark (GH200 480GB) vs Mac Studio M2 Ultra 192GB for Local LLMs

The Mac Studio M2 Ultra 192GB has about 60% more memory bandwidth (800 vs 500 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 60% faster on the Mac Studio M2 Ultra 192GB. The DGX Spark (GH200 480GB) fits more of the catalog at Q4/8K — 66 vs 57 of 69 models (480 vs 192 GB VRAM). Largest model that fits the DGX Spark (GH200 480GB) but not the Mac Studio M2 Ultra 192GB: DeepSeek-V4-Pro (861.6B). MSRP is $3,000 for the DGX Spark (GH200 480GB) vs $6,999 for the Mac Studio M2 Ultra 192GB. 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 (69 shared models), the Mac Studio M2 Ultra 192GB posts the higher tok/s in 62 rows vs 7. Methodology.

Spec comparison

	DGX Spark (GH200 480GB)	Mac Studio M2 Ultra 192GB
Vendor	NVIDIA	Apple
VRAM	480 GB	192 GB
Memory type	LPDDR5X	LPDDR5
Memory bandwidth	500 GB/s	800 GB/s
TDP	170 W	370 W
MSRP (list)	$3,000	$6,999
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 69 shared models

Model	Params (B)	DGX Spark (GH200 480GB) tok/s	DGX Spark (GH200 480GB) fits	Mac Studio M2 Ultra 192GB tok/s	Mac Studio M2 Ultra 192GB fits	Winner
MiniCPM5-1B	1.08	294.6 est.	Yes	471.4 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3.5-2B	2.0	159.1 est.	Yes	254.5 est.	Yes	Mac Studio M2 Ultra 192GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx	2.3	138.3 est.	Yes	221.3 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3.6-35B-A3B	36.0	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3.5-35B-A3B	34.7	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
GLM-4.7-Flash	31.2	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3-30B-A3B-Instruct-2507	30.5	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16	30.0	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3-Coder-Next	79.7	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Ornith-1.0-35B	35.0	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3-Next-80B-A3B-Instruct	81.3	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
qwen35b-a3b-fable-sft-abliterated	34.7	106.1 est.	Yes	169.7 est.	Yes	Mac Studio M2 Ultra 192GB
Llama-3.2-3B-Instruct	3.2	99.4 est.	Yes	159.1 est.	Yes	Mac Studio M2 Ultra 192GB
gemma-4-26B-A4B-it	25.2	83.7 est.	Yes	134.0 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3-4B-Instruct-2507	4.0	79.5 est.	Yes	127.3 est.	Yes	Mac Studio M2 Ultra 192GB

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

	DGX Spark (GH200 480GB)	Mac Studio M2 Ultra 192GB
Catalog models that fit	66 of 69	57 of 69
Largest exclusive fit	DeepSeek-V4-Pro (861.6B)	—

DGX Spark (GH200 480GB) details → · Mac Studio M2 Ultra 192GB details →