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Arc Pro B70 32GB vs RTX 5090 32GB for Local LLMs

The RTX 5090 32GB has about 195% more memory bandwidth (1,792 vs 608 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 195% faster on the RTX 5090 32GB. Both fit the same number of catalog models at Q4/8K (39 of 69; 32 vs 32 GB VRAM). MSRP is $999 for the Arc Pro B70 32GB vs $1,999 for the RTX 5090 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 (53 shared models), the RTX 5090 32GB posts the higher tok/s in 52 rows vs 1. Methodology.

Spec comparison

Arc Pro B70 32GBRTX 5090 32GB
VendorIntelNVIDIA
VRAM32 GB32 GB
Memory typeGDDR6GDDR7
Memory bandwidth608 GB/s1,792 GB/s
TDP225 W575 W
MSRP (list)$999$1,999
BuySearch 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 53 shared models

ModelParams (B)Arc Pro B70 32GB tok/sArc Pro B70 32GB fitsRTX 5090 32GB tok/sRTX 5090 32GB fitsWinner
MiniCPM5-1B1.08358.2 est.Yes1055.9 est.YesRTX 5090 32GB
Qwen3.5-2B2.0193.5 est.Yes570.2 est.YesRTX 5090 32GB
Qwen3-Coder-Next79.7186.8 est.No550.5 est.NoRTX 5090 32GB
Qwen3-Next-80B-A3B-Instruct81.3179.7 est.No529.6 est.NoRTX 5090 32GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx2.3168.2 est.Yes495.8 est.YesRTX 5090 32GB
Qwen3.6-35B-A3B36.0129.0 est.Yes380.1 est.YesRTX 5090 32GB
Qwen3.5-35B-A3B34.7129.0 est.Yes380.1 est.YesRTX 5090 32GB
GLM-4.7-Flash31.2129.0 est.Yes380.1 est.YesRTX 5090 32GB
Qwen3-30B-A3B-Instruct-250730.5129.0 est.Yes380.1 est.YesRTX 5090 32GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.0129.0 est.Yes380.1 est.YesRTX 5090 32GB
Ornith-1.0-35B35.0129.0 est.Yes380.1 est.YesRTX 5090 32GB
qwen35b-a3b-fable-sft-abliterated34.7129.0 est.Yes380.1 est.YesRTX 5090 32GB
Llama-3.2-3B-Instruct3.2120.9 est.Yes356.4 est.YesRTX 5090 32GB
gemma-4-26B-A4B-it25.2101.8 est.Yes300.1 est.YesRTX 5090 32GB
Qwen3-4B-Instruct-25074.096.7 est.Yes285.1 est.YesRTX 5090 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 Pro B70 32GBRTX 5090 32GB
Catalog models that fit39 of 6939 of 69
Largest exclusive fit——

Arc Pro B70 32GB details → · RTX 5090 32GB details →