AMD MI50 32GB vs NVIDIA DGX Spark for local LLMs
13 reports on the AMD MI50 32GB and 71 on the NVIDIA DGX Spark
Which is faster for local LLMs?
Nobody has reported the same model at the same quant on both cards yet, so there's no measured head-to-head. Memory bandwidth, which caps how fast a card can write, is 3.8x higher on the AMD MI50 32GB (1,024 GB/s on the AMD MI50 32GB, 273 on the NVIDIA DGX Spark). The estimates below compare them on the models people run most.
AMD MI50 32GB
- Memory
- 32GB
- Memory bandwidth
- 1,024 GB/s
- FP16 compute
- 26.5 TFLOPS
- Reports
- 13
NVIDIA DGX Spark
- Memory
- 128GB unified
- Memory bandwidth
- 273 GB/s
- FP16 compute
- 125 TFLOPS
- Reports
- 71
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.
| Model | AMD MI50 32GB | NVIDIA DGX Spark |
|---|---|---|
| Qwen3.8 27B | 25.7 t/sQ6_K | 4.0 t/sFP16 |
| Qwen3.8 125B · 6B active | 19.6 t/sQ2_K, experts in RAM | 14.4 t/sQ6_K |
| DeepSeek V4 Flash 284B · 13B active | doesn't fit at these settings | 38.3 t/sQ2_K |
| Qwen3.6 35B · 3B active | 93.1 t/sQ5_K_M | 14.5 t/sFP16 |
| Qwen3.6 27B | 25.7 t/sQ6_K | 4.0 t/sFP16 |
| GLM-5.3 320B · 18B active | doesn't fit at these settings | 12.7 t/sQ2_K |
Change the context, RAM or model in the calculator: AMD MI50 32GB · NVIDIA DGX Spark
Every report on each card, with its source: AMD MI50 32GB · NVIDIA DGX Spark