Head to head · October 2026
DGX Spark vs Ryzen AI Max+ 395: which is better for local AI?
128GB against 128GB, 273 against 256 GB/s. What each runs, how fast, and which one to buy.
The verdict
Both have 128GB of memory, so they run the same models. Generation speed is within about 10% between the two. The Ryzen AI Max+ 395 costs about $3,650 less ($3,300 vs $6,950).
- Get the DGX Spark if you want the widest software support (CUDA).
- Get the Ryzen AI Max+ 395 if you want the most for your money or you care about power draw, heat, and noise.
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Performance
Model by model
Estimated single-user generation speed for popular models, at the best quantization each card can hold with 8K context.
| Model | DGX Spark | Ryzen AI Max+ 395 |
|---|---|---|
| Llama 3.1 8B Instruct | ~23 tok/sQ8_0 | ~22 tok/sQ8_0 |
| Qwen3 14B | ~13 tok/sQ8_0 | ~12 tok/sQ8_0 |
| gpt-oss-20b | ~43 tok/sMXFP4 | ~41 tok/sMXFP4 |
| Qwen3 30B-A3B (2507) | ~31 tok/sQ8_0 | ~29 tok/sQ8_0 |
| Gemma 3 27B | ~7.1 tok/sQ8_0 | ~6.6 tok/sQ8_0 |
| Qwen3 32B | ~5.8 tok/sQ8_0 | ~5.5 tok/sQ8_0 |
| Llama 3.3 70B Instruct | ~2.7 tok/sQ8_0 | ~2.6 tok/sQ8_0 |
| gpt-oss-120b | ~37 tok/sMXFP4 | ~35 tok/sMXFP4 |
Estimates from our bandwidth model; see methodology. Measured results, where we have them, are on each GPU's page.
Specifications
Spec by spec
| Spec | DGX Spark | Ryzen AI Max+ 395 |
|---|---|---|
| Memory | 128GB LPDDR5X | 128GB LPDDR5X-8000 |
| Bandwidth | 273 GB/s● | 256 GB/s |
| Power | 240W | 120W● |
| Price | ~$6,950 | ~$3,300● |
| Price per GB | $54 | $26● |
| Architecture | Grace Blackwell (GB10) | RDNA 3.5 (Strix Halo) |
| Released | 2025 | 2025 |
| Software | CUDA | ROCm, Vulkan |
Our take
Bottom line on each
A quiet CUDA desktop with 128GB, but 273 GB/s limits speed and the price has climbed to about $6,950.
The cheapest way to run 100B-class MoE models in one quiet box, though prices have climbed past $3,300.
Frequently asked questions
Is the DGX Spark or Ryzen AI Max+ 395 better for running LLMs?
Both have 128GB of memory, so they run the same models. Generation speed is within about 10% between the two. The Ryzen AI Max+ 395 costs about $3,650 less ($3,300 vs $6,950).
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