B200 192GB SXM vs Mac Studio M2 Ultra 192GB for Local LLMs

The B200 192GB SXM has about 900% more memory bandwidth (8,000 vs 800 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 900% faster on the B200 192GB SXM. Both fit the same number of catalog models at Q4/8K (50 of 61; 192 vs 192 GB VRAM). MSRP is $40,000 for the B200 192GB SXM 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. Not retail-shoppable: B200 192GB SXM (datacenter-class; cloud rental is the realistic way to use it). In the Q4/8K head-to-head below (61 shared models), the B200 192GB SXM posts the higher tok/s in 61 rows vs 0. Methodology.

Spec comparison

	B200 192GB SXM	Mac Studio M2 Ultra 192GB
Vendor	NVIDIA	Apple
VRAM	192 GB	192 GB
Memory type	HBM3e	LPDDR5
Memory bandwidth	8,000 GB/s	800 GB/s
TDP	1000 W	370 W
MSRP (list)	$40,000	$6,999
Buy	—	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 61 shared models

Model	Params (B)	B200 192GB SXM tok/s	B200 192GB SXM fits	Mac Studio M2 Ultra 192GB tok/s	Mac Studio M2 Ultra 192GB fits	Winner
gemma-3-1b-it	1.0	5000 est.	Yes	509.1 est.	Yes	B200 192GB SXM
Qwen3-0.6B	0.8	5000 est.	Yes	636.4 est.	Yes	B200 192GB SXM
Llama-3.2-1B-Instruct	1.2	4242.4 est.	Yes	424.2 est.	Yes	B200 192GB SXM
Qwen3-1.7B	2.0	2545.5 est.	Yes	254.5 est.	Yes	B200 192GB SXM
Qwen3-30B-A3B	30.5	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
Qwen3-Coder-30B-A3B-Instruct	30.5	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
GLM-4.7-Flash	31.2	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
Qwen3-30B-A3B-Instruct-2507	30.5	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
Qwen3-Next-80B-A3B-Instruct	81.3	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
Qwen3-Coder-Next	79.7	1697.0 est.	Yes	169.7 est.	Yes	B200 192GB SXM
Llama-3.2-3B-Instruct	3.2	1590.9 est.	Yes	159.1 est.	Yes	B200 192GB SXM
gpt-oss-20b	21.5	1414.1 est.	Yes	116.1 measured	Yes	B200 192GB SXM
Phi-4-mini-instruct	3.8	1339.7 est.	Yes	134.0 est.	Yes	B200 192GB SXM
Phi-4-mini-reasoning	3.8	1339.7 est.	Yes	134.0 est.	Yes	B200 192GB SXM
gemma-3-4b-it	4.3	1305.4 est.	Yes	130.5 est.	Yes	B200 192GB SXM

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

	B200 192GB SXM	Mac Studio M2 Ultra 192GB
Catalog models that fit	50 of 61	50 of 61
Largest exclusive fit	—	—

B200 192GB SXM details → · Mac Studio M2 Ultra 192GB details →