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MacBook Neo A18 Pro 8GB vs RTX A6000 48GB for Local LLMs

The RTX A6000 48GB has about 1180% more memory bandwidth (768 vs 60 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 1180% faster on the RTX A6000 48GB. The RTX A6000 48GB fits more of the catalog at Q4/8K — 39 vs 11 of 67 models (48 vs 8 GB VRAM). Largest model that fits the RTX A6000 48GB but not the MacBook Neo A18 Pro 8GB: Qwen3-Next-80B-A3B-Instruct (81.3B). MSRP is $0 for the MacBook Neo A18 Pro 8GB vs $4,500 for the RTX A6000 48GB. 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 (36 shared models), the RTX A6000 48GB posts the higher tok/s in 36 rows vs 0. Methodology.

Spec comparison

MacBook Neo A18 Pro 8GBRTX A6000 48GB
VendorAppleNVIDIA
VRAM8 GB48 GB
Memory typeLPDDR5XGDDR6
Memory bandwidth60 GB/s768 GB/s
TDP20 W300 W
MSRP (list)$0$4,500
BuySearch AmazonSearch Amazon · eBay · Newegg · B&H Photo

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 36 shared models

ModelParams (B)MacBook Neo A18 Pro 8GB tok/sMacBook Neo A18 Pro 8GB fitsRTX A6000 48GB tok/sRTX A6000 48GB fitsWinner
MiniCPM5-1B1.0870.0 est.Yes647.9 est.YesRTX A6000 48GB
Qwen3.5-2B2.037.8 est.Yes349.9 est.YesRTX A6000 48GB
Qwen3.6-35B-A3B36.02.6 est.No233.2 est.YesRTX A6000 48GB
Qwen3.5-35B-A3B34.72.8 est.No233.2 est.YesRTX A6000 48GB
GLM-4.7-Flash31.22.5 est.No233.2 est.YesRTX A6000 48GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.03.5 est.No233.2 est.YesRTX A6000 48GB
Ornith-1.0-35B35.02.7 est.No233.2 est.YesRTX A6000 48GB
Llama-3.2-3B-Instruct3.223.6 est.Yes218.7 est.YesRTX A6000 48GB
gemma-4-26B-A4B-it25.23.9 est.No184.1 est.YesRTX A6000 48GB
Nanbeige4.2-3B4.019.2 est.Yes178.1 est.YesRTX A6000 48GB
Qwen3-4B-Instruct-25074.018.9 est.Yes174.9 est.YesRTX A6000 48GB
NVIDIA-Nemotron-3-Nano-4B-BF164.018.9 est.Yes174.9 est.YesRTX A6000 48GB
Qwen3-4B-Thinking-25074.018.9 est.Yes174.9 est.YesRTX A6000 48GB
gemma-4-E2B-it5.114.8 est.Yes137.2 est.YesRTX A6000 48GB
Mistral-7B-Instruct-v0.37.210.5 est.Yes97.2 est.YesRTX A6000 48GB

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

MacBook Neo A18 Pro 8GBRTX A6000 48GB
Catalog models that fit11 of 6739 of 67
Largest exclusive fit—Qwen3-Next-80B-A3B-Instruct (81.3B)

MacBook Neo A18 Pro 8GB details → · RTX A6000 48GB details →