Arc A770 16GB vs Arc Pro B70 32GB for Local LLMs

The Arc Pro B70 32GB has about 9% more memory bandwidth (608 vs 560 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 9% faster on the Arc Pro B70 32GB. The Arc Pro B70 32GB fits more of the catalog at Q4/8K — 39 vs 24 of 69 models (32 vs 16 GB VRAM). Largest model that fits the Arc Pro B70 32GB but not the Arc A770 16GB: Qwen3.6-35B-A3B (36.0B). MSRP is $349 for the Arc A770 16GB vs $999 for the Arc Pro B70 32GB. 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 (44 shared models), the Arc Pro B70 32GB posts the higher tok/s in 29 rows vs 15. Methodology.

Spec comparison

	Arc A770 16GB	Arc Pro B70 32GB
Vendor	Intel	Intel
VRAM	16 GB	32 GB
Memory type	GDDR6	GDDR6
Memory bandwidth	560 GB/s	608 GB/s
TDP	225 W	225 W
MSRP (list)	$349	$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 44 shared models

Model	Params (B)	Arc A770 16GB tok/s	Arc A770 16GB fits	Arc Pro B70 32GB tok/s	Arc Pro B70 32GB fits	Winner
MiniCPM5-1B	1.08	330.0 est.	Yes	358.2 est.	Yes	Arc Pro B70 32GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16	30.0	281.9 est.	No	129.0 est.	Yes	Arc A770 16GB
Qwen3-30B-A3B-Instruct-2507	30.5	256.4 est.	No	129.0 est.	Yes	Arc A770 16GB
GLM-4.7-Flash	31.2	246.1 est.	No	129.0 est.	Yes	Arc A770 16GB
Qwen3.5-35B-A3B	34.7	213.1 est.	No	129.0 est.	Yes	Arc A770 16GB
qwen35b-a3b-fable-sft-abliterated	34.7	202.3 est.	No	129.0 est.	Yes	Arc A770 16GB
Ornith-1.0-35B	35.0	199.2 est.	No	129.0 est.	Yes	Arc A770 16GB
Qwen3.6-35B-A3B	36.0	198.7 est.	No	129.0 est.	Yes	Arc A770 16GB
Qwen3.5-2B	2.0	178.2 est.	Yes	193.5 est.	Yes	Arc Pro B70 32GB
Qwen3-Coder-Next	79.7	42.9 est.	No	186.8 est.	No	Arc Pro B70 32GB
Qwen3-Next-80B-A3B-Instruct	81.3	41.3 est.	No	179.7 est.	No	Arc Pro B70 32GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx	2.3	154.9 est.	Yes	168.2 est.	Yes	Arc Pro B70 32GB
Llama-3.2-3B-Instruct	3.2	111.4 est.	Yes	120.9 est.	Yes	Arc Pro B70 32GB
gpt-oss-20b	21.5	99.0 est.	Yes	107.5 est.	Yes	Arc Pro B70 32GB
gemma-4-26B-A4B-it	25.2	93.8 est.	Yes	101.8 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 A770 16GB	Arc Pro B70 32GB
Catalog models that fit	24 of 69	39 of 69
Largest exclusive fit	—	Qwen3.6-35B-A3B (36.0B)

Arc A770 16GB details → · Arc Pro B70 32GB details →