NVIDIA DGX Spark vs M4 24GB for local LLMs
87 reports on the NVIDIA DGX Spark and 8 on the M4 24GB
Which is faster for local LLMs?
On Qwen3.8 27B at 4-bit, the NVIDIA DGX Spark has generation speed not reported; prompt processing 899.9 tokens/s (one run); the M4 24GB has 6.5 generation tokens/s (one run); prompt processing 60.8 tokens/s (one run). Memory bandwidth, which caps how fast a card can write, is 2.3x higher on the NVIDIA DGX Spark (273 GB/s on the NVIDIA DGX Spark, 120 on the M4 24GB).
- Memory
- 128GB unified
- Memory bandwidth
- 273 GB/s
- FP16 compute
- 125 TFLOPS
- Reports
- 87
- Memory
- 24GB unified
- Memory bandwidth
- 120 GB/s
- FP16 compute
- 4.3 TFLOPS
- Reports
- 8
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 | M4 24GB |
|---|---|---|
| Qwen3.8 27B4-bit | -0 runsPP 899.9 (one run)llama.cpp16K context | 6.5one runPP 60.8 (one run)llama.cppcontext 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 | M4 24GB |
|---|---|---|
| Qwen3.8 27B | 4.0 t/sFP16 | 10.8 t/sQ2_K |
| Qwen3.8 125B · 6B active | 14.4 t/sQ6_K | doesn't fit at these settings |
| Qwen3.6 35B · 3B active | 14.5 t/sFP16 | 35.8 t/sQ2_K |
| DeepSeek V4 Flash 284B · 13B active | 38.3 t/sQ2_K | doesn't fit at these settings |
| Qwen3.6 27B | 4.0 t/sFP16 | 10.8 t/sQ2_K |
| Gemma 4 26B · 4B active | 10.8 t/sFP16 | 24.1 t/sQ3_K_S |
| DeepSeek V4.1 Flash 552B · 16B active | doesn't fit at these settings | doesn't fit at these settings |
Change the context, RAM or model in the calculator: NVIDIA DGX Spark · M4 24GB
Every report on each card, with its source: NVIDIA DGX Spark · M4 24GB