NVIDIA DGX Spark vs AMD Radeon AI PRO R9700 32GB for local LLMs
87 reports on the NVIDIA DGX Spark and 61 on the AMD Radeon AI PRO R9700 32GB
Which is faster for local LLMs?
On Qwen3.6 35B · 3B active at 4-bit, the NVIDIA DGX Spark has 78.3 generation tokens/s (one run); the AMD Radeon AI PRO R9700 32GB has 61.4 generation tokens/s (one run); prompt processing 7800.0 tokens/s (one run). Those are community reports whose engines and settings differ, so the gap is a rough sign, not a controlled measure of the two cards. Memory bandwidth, which caps how fast a card can write, is 2.3x higher on the AMD Radeon AI PRO R9700 32GB (273 GB/s on the NVIDIA DGX Spark, 640 on the AMD Radeon AI PRO R9700 32GB). Across 1 shared models with generation measurements on both cards, the NVIDIA DGX Spark's median is higher on 1 and the AMD Radeon AI PRO R9700 32GB's on 0.
- Memory
- 128GB unified
- Memory bandwidth
- 273 GB/s
- FP16 compute
- 125 TFLOPS
- Reports
- 87
- Memory
- 32GB
- Memory bandwidth
- 640 GB/s
- FP16 compute
- 191 TFLOPS
- Reports
- 61
Measured on both
Generation and prompt processing speeds from plain runs (one device, one request, no speculative decoding, the whole model in the device's memory) of the same model size at the same bit class. Each side shows the engines and reported context behind its median. Context can mean a configured window or prompt depth, so these are community comparisons with differing settings. How to read these
| Model | NVIDIA DGX Spark | AMD Radeon AI PRO R9700 32GB |
|---|---|---|
| Qwen3.6 35B · 3B active4-bit | 78.3one runvLLM128K context | 61.4one runPP 7800.0 (one run)vLLM256K context |
| Qwen3.8 27B4-bit | -0 runsPP 899.9 (one run)llama.cpp16K context | 29.83 runsPP 1287.0 (one run)llama.cpp, 1 not stated2K context, 2 not stated |
Estimated by the calculator
The quant the calculator recommends for each card and its estimated speed at a 32,768-token context with 32 GB of system RAM, from memory bandwidth and the model's shape. Where a model was also measured above, the measurement wins.
| Model | NVIDIA DGX Spark | AMD Radeon AI PRO R9700 32GB |
|---|---|---|
| Qwen3.6 35B · 3B active | 14.5 t/sFP16 | 58.2 t/sQ5_K_M |
| Qwen3.8 27B | 4.0 t/sFP16 | 16.0 t/sQ6_K |
| Qwen3.8 125B · 6B active | 14.4 t/sQ6_K | 18.7 t/sQ2_K, experts in RAM |
| DeepSeek V4 Flash 284B · 13B active | 38.3 t/sQ2_K | doesn't fit at these settings |
| Qwen3.6 27B | 4.0 t/sFP16 | 16.0 t/sQ6_K |
| Gemma 4 26B · 4B active | 10.8 t/sFP16 | 40.9 t/sQ6_K |
| DeepSeek V4.1 Flash 552B · 16B active | doesn't fit at these settings | doesn't fit at these settings |
| GLM-5.3 320B · 18B active | 12.7 t/sQ2_K | doesn't fit at these settings |
Change the context, RAM or model in the calculator: NVIDIA DGX Spark · AMD Radeon AI PRO R9700 32GB
Every report on each card, with its source: NVIDIA DGX Spark · AMD Radeon AI PRO R9700 32GB