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MacBook Neo A18 Pro 8GB vs RTX 3080 10GB for Local LLMs

The RTX 3080 10GB has about 1167% more memory bandwidth (760 vs 60 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 1167% faster on the RTX 3080 10GB. The RTX 3080 10GB fits more of the catalog at Q4/8K — 17 vs 11 of 67 models (10 vs 8 GB VRAM). Largest model that fits the RTX 3080 10GB but not the MacBook Neo A18 Pro 8GB: gemma-4-12b-it (11.95B). MSRP is $0 for the MacBook Neo A18 Pro 8GB vs $699 for the RTX 3080 10GB. 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 3080 10GB posts the higher tok/s in 36 rows vs 0. Methodology.

Spec comparison

MacBook Neo A18 Pro 8GBRTX 3080 10GB
VendorAppleNVIDIA
VRAM8 GB10 GB
Memory typeLPDDR5XGDDR6X
Memory bandwidth60 GB/s760 GB/s
TDP20 W320 W
MSRP (list)$0$699
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 3080 10GB tok/sRTX 3080 10GB fitsWinner
MiniCPM5-1B1.0870.0 est.Yes641.1 est.YesRTX 3080 10GB
Qwen3.5-2B2.037.8 est.Yes346.2 est.YesRTX 3080 10GB
Llama-3.2-3B-Instruct3.223.6 est.Yes216.4 est.YesRTX 3080 10GB
gpt-oss-20b21.55.7 est.No214.3 est.NoRTX 3080 10GB
Nanbeige4.2-3B4.019.2 est.Yes176.3 est.YesRTX 3080 10GB
Qwen3-4B-Instruct-25074.018.9 est.Yes173.1 est.YesRTX 3080 10GB
NVIDIA-Nemotron-3-Nano-4B-BF164.018.9 est.Yes173.1 est.YesRTX 3080 10GB
Qwen3-4B-Thinking-25074.018.9 est.Yes173.1 est.YesRTX 3080 10GB
gemma-4-26B-A4B-it25.23.9 est.No149.5 est.NoRTX 3080 10GB
gemma-4-E2B-it5.114.8 est.Yes135.8 est.YesRTX 3080 10GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.03.5 est.No135.7 est.NoRTX 3080 10GB
Qwen3-30B-A3B-Instruct-250730.53.3 est.No126.9 est.NoRTX 3080 10GB
Qwen3.5-35B-A3B34.72.8 est.No106.2 est.NoRTX 3080 10GB
Ornith-1.0-35B35.02.7 est.No104.4 est.NoRTX 3080 10GB
Qwen3.6-35B-A3B36.02.6 est.No99.0 est.NoRTX 3080 10GB

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 3080 10GB
Catalog models that fit11 of 6717 of 67
Largest exclusive fit—gemma-4-12b-it (11.95B)

MacBook Neo A18 Pro 8GB details → · RTX 3080 10GB details →