
AMD GPUs
AMD Radeon RX 7900 XTX
- Memory
- 24 GB
- Bandwidth
- 960 GB/s
Largest popular model at 4-bit: Qwen3.6 27B
24 GB and 960 GB/s: RTX 3090-class memory, bought new.
Apple · Apple silicon · 2026
A silent, tiny always-on box for small models. Choose 32 GB if AI is the goal.
from $899 (launch price)
Researched from manufacturer data and public sources; not tested by us.· Last reviewed Oct 11, 2026
Popular models at Q4_K_M with a 32K-token context. Memory needed from real model files; speed is the theoretical ceiling.
Model weightsContext cache (KV)RuntimeUsable limit (colour = verdict)
| Model | Verdict | Memory | Speed ceiling |
|---|---|---|---|
| Qwen3 1.7B | Runs | ≤ 153 tok/s | |
| Qwen3.5 9B | Runs | ≤ 30 tok/s | |
| Gemma 4 12B | Runs | ≤ 24 tok/s | |
| gpt-oss-20b | Runs | ≤ 85 tok/s | |
| Qwen3.6 27B | Runs, tight | ≤ 10 tok/s | |
| Qwen3.6 35B A3B | Not enough memory | — | |
| Llama 3.3 70B | Not enough memory | — | |
| gpt-oss-120b | Not enough memory | — | |
| Qwen3.5 122B A10B | Not enough memory | — | |
| Qwen3.5 397B A17B | Not enough memory | — |
Theoretical maximum for generating text: memory bandwidth divided by the bytes read per token. Real runs usually reach about half to three quarters of it.
Prices are editorial references (launch price and a typical street price on the date shown), not live prices. In 2026 the memory shortage has pushed many prices well above launch.
Prices are shown only if updated in the last 24 hours and may change; the retailer’s price at checkout applies. We may earn a commission from these links at no cost to you. Affiliate disclosure
Best for: Home Assistant voice, small private chat models and a low-power home server.
Yes for small models and low power; for 27B+ models get an M5 Pro or more.
macOS lets the GPU use about two thirds of memory on machines with up to 36 GB, and about three quarters above that. The limit can be raised (sudo sysctl iogpu.wired_limit_mb=…), leaving less for macOS and other apps; our figures use the default.
Source: Manufacturer specifications
How well the popular local-AI tools run on it today (editorial assessment).
Measured results with their source. We never invent speeds.
No measured results yet. The table above shows the theoretical ceiling instead.

AMD GPUs
Largest popular model at 4-bit: Qwen3.6 27B
24 GB and 960 GB/s: RTX 3090-class memory, bought new.
Intel GPUs
Largest popular model at 4-bit: Qwen3.6 35B A3B
Intel's big Battlemage: 32 GB and 608 GB/s for less than AMD's R9700.
NVIDIA GPUs
Largest popular model at 4-bit: Qwen3.6 27B
The homelab classic: 24 GB and 936 GB/s, bought used. Two of them make 48 GB.