Mac Studio M2 Ultra 192GB vs Titan X Pascal 12GB for Local LLMs

The Mac Studio M2 Ultra 192GB has about 67% more memory bandwidth (800 vs 480 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 67% faster on the Mac Studio M2 Ultra 192GB. The Mac Studio M2 Ultra 192GB fits more of the catalog at Q4/8K — 57 vs 18 of 69 models (192 vs 12 GB VRAM). Largest model that fits the Mac Studio M2 Ultra 192GB but not the Titan X Pascal 12GB: MiMo-V2.5 (310.0B). MSRP is $6,999 for the Mac Studio M2 Ultra 192GB vs $1,200 for the Titan X Pascal 12GB. 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 (41 shared models), the Mac Studio M2 Ultra 192GB posts the higher tok/s in 35 rows vs 6. Methodology.

Spec comparison

	Mac Studio M2 Ultra 192GB	Titan X Pascal 12GB
Vendor	Apple	NVIDIA
VRAM	192 GB	12 GB
Memory type	LPDDR5	GDDR5X
Memory bandwidth	800 GB/s	480 GB/s
TDP	370 W	250 W
MSRP (list)	$6,999	$1,200
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 41 shared models

Model	Params (B)	Mac Studio M2 Ultra 192GB tok/s	Mac Studio M2 Ultra 192GB fits	Titan X Pascal 12GB tok/s	Titan X Pascal 12GB fits	Winner
MiniCPM5-1B	1.08	471.4 est.	Yes	282.8 est.	Yes	Mac Studio M2 Ultra 192GB
Qwen3.5-2B	2.0	254.5 est.	Yes	152.7 est.	Yes	Mac Studio M2 Ultra 192GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx	2.3	221.3 est.	Yes	132.8 est.	Yes	Mac Studio M2 Ultra 192GB
gpt-oss-20b	21.5	116.1 measured	Yes	189.3 est.	No	Titan X Pascal 12GB
Qwen3.6-35B-A3B	36.0	169.7 est.	Yes	95.7 est.	No	Mac Studio M2 Ultra 192GB
Qwen3.5-35B-A3B	34.7	169.7 est.	Yes	102.6 est.	No	Mac Studio M2 Ultra 192GB
GLM-4.7-Flash	31.2	169.7 est.	Yes	118.5 est.	No	Mac Studio M2 Ultra 192GB
Qwen3-30B-A3B-Instruct-2507	30.5	169.7 est.	Yes	123.5 est.	No	Mac Studio M2 Ultra 192GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16	30.0	169.7 est.	Yes	135.8 est.	No	Mac Studio M2 Ultra 192GB
Qwen3-Coder-Next	79.7	169.7 est.	Yes	20.7 est.	No	Mac Studio M2 Ultra 192GB
Ornith-1.0-35B	35.0	169.7 est.	Yes	96.0 est.	No	Mac Studio M2 Ultra 192GB
Qwen3-Next-80B-A3B-Instruct	81.3	169.7 est.	Yes	19.9 est.	No	Mac Studio M2 Ultra 192GB
qwen35b-a3b-fable-sft-abliterated	34.7	169.7 est.	Yes	97.5 est.	No	Mac Studio M2 Ultra 192GB
Llama-3.2-3B-Instruct	3.2	159.1 est.	Yes	95.5 est.	Yes	Mac Studio M2 Ultra 192GB
gemma-4-26B-A4B-it	25.2	134.0 est.	Yes	135.0 est.	No	Titan X Pascal 12GB

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

	Mac Studio M2 Ultra 192GB	Titan X Pascal 12GB
Catalog models that fit	57 of 69	18 of 69
Largest exclusive fit	MiMo-V2.5 (310.0B)	—

Mac Studio M2 Ultra 192GB details → · Titan X Pascal 12GB details →