GPU & Apple Silicon Comparison for LLMs
Every GPU and Apple Silicon device we track for local language-model inference, side by side. Compare VRAM, memory bandwidth, power draw, price, and the largest model each can run at Q4_K_M. Use the VRAM calculator to match a specific model to hardware.
| Device | VRAM | Price | Buy |
|---|---|---|---|
| Apple Mac Studio (M5 Max, 128GB) Apple Silicon After a 4 GB macOS reserve, about 124 GB is usable. 70B Q8 is 86 GB and fits. Qwen3.8-Flash-Next UD-Q4_K_XL is 111.33 GB and is tight. | 128 GB | Check current price on Amazon | — |
| Apple Mac Studio (M4 Max, 128GB) Apple Silicon After a 4 GB macOS reserve, about 124 GB is usable. 70B Q8 is 86 GB and fits. Qwen3.8-Flash-Next UD-Q4_K_XL is 111.33 GB and is tight. | 128 GB | Check current price on Amazon | — |
| NVIDIA DGX Spark NVIDIA | 128 GB | Check current price on Amazon | As an Amazon Associate, LLM Hardware earns from qualifying purchases. Links to Amazon are affiliate links, at no extra cost to you. Amazon |
| GMKtec EVO-X2 (Ryzen AI Max+ 395, 128GB) Mini PC 128 GB at ~256 GB/s. Dense 70B Q4 (44 GB) fits and is slow. Qwen3.8-Flash-Next UD-IQ4_XS is 93.68 GB and fits. UD-Q4_K_XL is 111.33 GB and is tight. DeepSeek-V4-Flash only at an aggressive quant (~155 GB at a normal 4-bit). Not CUDA. | 128 GB | Check current price on Amazon | Amazon |
| Beelink GTR9 Pro (128GB) — out of stock Mini PC 128 GB at ~256 GB/s when the listing is this GTR9 Pro. UD-IQ4_XS (93.68 GB) fits. UD-Q4_K_XL (111.33 GB) is tight. Sold out on 2026-10-11. Not CUDA. | 128 GB | Check current price on Amazon | — |
| Beelink GTR9 Pro (128GB, OOS watchlist) Mini PC Same 128 GB / ~256 GB/s tier when stocked. UD-IQ4_XS (93.68 GB) fits. Not a buy on 2026-10-09. | 128 GB | Check current price on Amazon | — |
| Apple Mac Studio (M5 Ultra, 96GB) Apple Silicon After a 4 GB macOS reserve, about 92 GB is usable. 70B Q4 is 44 GB and fits. 70B Q8 is 86 GB and is tight. Nemotron 3.5 Bolt at Q4 is 46.4 GB and fits. Qwen3.8-Flash-Next UD-Q4_K_XL is 111.33 GB and does not fit. | 96 GB | Check current price on Amazon | — |
| Apple Mac Studio (M5 Max, 64GB) Apple Silicon After a 4 GB macOS reserve, about 60 GB is usable. 70B Q4 is 44 GB and fits. 27B FP16 is 66.8 GB and does not fit. 70B Q8 is 86 GB and does not fit. | 64 GB | Check current price on Amazon | — |
| Apple Mac Studio (M4 Max, 64GB) Apple Silicon After a 4 GB macOS reserve, about 60 GB is usable. 70B Q4 is 44 GB and fits. 27B FP16 is 66.8 GB and does not fit. 70B Q8 is 86 GB and does not fit. | 64 GB | Check current price on Amazon | — |
| Apple Mac Studio (M5 Max, 48GB) Apple Silicon After a 4 GB macOS reserve, about 44 GB is usable. 27B Q8 is 34.4 GB and fits. 70B Q4 is 44 GB and is the edge. 70B Q8 is 86 GB and does not fit. | 48 GB | Check current price on Amazon | — |
| Apple Mac mini (M4 Pro, 48GB) Apple Silicon After a 4 GB macOS reserve, about 44 GB is usable. 27B Q8 is 34.4 GB and fits. 70B Q4 is 44 GB and is the edge. 70B Q8 is 86 GB and does not fit. | 48 GB | Check current price on Amazon | — |
| Apple Mac Studio (M5 Max, 36GB) Apple Silicon After a 4 GB macOS reserve, about 32 GB is usable. Qwen3.6-27B Q4 is 18.2 GB and fits. LFM2.5-24B-A2B Q4 is 16.4 GB and fits. Q8 is 30.8 GB and is the edge. 70B Q4 is 44 GB and does not fit. | 36 GB | Check current price on Amazon | Amazon |
| NVIDIA GeForce RTX 5090 (32GB) NVIDIA | 32 GB | Check current price on Amazon | Amazon |
| NVIDIA GeForce RTX 4090 (24GB) NVIDIA | 24 GB | Check current price on Amazon | Amazon |
| AMD Radeon RX 7900 XTX (24GB) AMD | 24 GB | Check current price on Amazon | Amazon |
| NVIDIA GeForce RTX 3090 (24GB) NVIDIA 24 GB fits Llama 3.1 8B Q4 (6.8 GB) and Qwen3.6-27B Q4 (18.2 GB). 70B Q4 is 44 GB and does not fit. | 24 GB | Check current price on Amazon | Amazon |
| Apple Mac mini (M5 Pro, 24GB) Apple Silicon After a 4 GB macOS reserve, about 20 GB is usable. 27B Q4 is 18.2 GB and is tight. LFM2.5-24B-A2B Q4 is 16.4 GB and is tight. Q8 is 30.8 GB and does not fit. | 24 GB | Check current price on Amazon | Amazon |
| Apple Mac mini (M4 Pro, 24GB) Apple Silicon After a 4 GB macOS reserve, about 20 GB is usable. 27B Q4 is 18.2 GB and is tight. LFM2.5-24B-A2B Q4 is 16.4 GB and is tight. Q8 is 30.8 GB and does not fit. | 24 GB | Check current price on Amazon | — |
| Apple Mac mini (M6, 24GB) Apple Silicon After a 4 GB macOS reserve, about 20 GB is usable. 14B Q4 is 10.4 GB and fits. 27B Q4 is 18.2 GB and is tight. 32B Q4 is 21.2 GB and does not fit. | 24 GB | Check current price on Amazon | Amazon |
| Apple Mac mini (M4, 24GB) Apple Silicon After a 4 GB macOS reserve, about 20 GB is usable. 14B Q4 is 10.4 GB and fits. 27B Q4 is 18.2 GB and is tight. 32B Q4 is 21.2 GB and does not fit. | 24 GB | Check current price on Amazon | — |
| NVIDIA RTX 5080 (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| NVIDIA RTX 5070 Ti (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| NVIDIA RTX 4080 (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| NVIDIA RTX 4070 Ti Super (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| PNY GeForce RTX 5060 Ti (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| NVIDIA RTX 4060 Ti (16GB) NVIDIA | 16 GB | Check current price on Amazon | Amazon |
| Apple Mac mini (M6, 16GB) Apple Silicon After a 4 GB macOS reserve, about 12 GB is usable. 7B Q4 is 6.2 GB and fits. 8B Q4 is 6.8 GB and fits. Gemma 3 12B Q4 is 9.2 GB and fits with little room. 14B Q4 is 10.4 GB and is tight. 27B Q4 is 18.2 GB and does not fit. | 16 GB | Check current price on Amazon | Amazon |
| Apple Mac mini (M4, 16GB) Apple Silicon After a 4 GB macOS reserve, about 12 GB is usable. 7B Q4 is 6.2 GB and fits. 14B Q4 is 10.4 GB and is tight. 27B Q4 is 18.2 GB and does not fit. | 16 GB | Check current price on Amazon | — |
| NVIDIA RTX 5070 (12GB) NVIDIA | 12 GB | Check current price on Amazon | Amazon |
| NVIDIA GeForce RTX 4070 (12GB) NVIDIA | 12 GB | Check current price on Amazon | Amazon |
| Intel Arc B580 (12GB) Intel | 12 GB | Check current price on Amazon | Amazon |
| NVIDIA GeForce RTX 4060 (8GB) NVIDIA | 8 GB | Check current price on Amazon | Amazon |
Max model @ Q4 is the largest dense size where params × 0.6 + 2 still fits (8 GB → 10B, 12 GB → 16B, 16 GB → 23B, 24 GB → 36B, 32 GB → 50B, 128 GB → 210B). Apple Silicon rows subtract 4 GB for macOS first, on top of that +2. The column is a capacity ceiling, not a speed. Strix Halo at 128 GB and ~256 GB/s holds a slow dense 70B Q4 and large MoE quants, not a 210B interactive model. Mixture-of-Experts models use total parameters. Check current price on Amazon. Full methodology.