direct comparison under identical conditions
DGX Spark 1 vs 2 Local LLM Serving Comparison
The two-machine configuration has two 128GB nodes rather than a single 256GB memory. This is advantageous when larger models and throughput headroom are the goal, and the rate of a single request is not immediately doubled.
core difference
| Measure | DGX Spark 128GB | 2× DGX Spark 256GB |
|---|---|---|
| Available fast memory | 116GB | 232GB |
| Memory bandwidth | 273GB/s | 546GB/s |
| Sustained LLM power | about 190W | about 380W |
| Korean price range (KRW) | 710–870 × KRW 10,000 | 1,420–1,740 × KRW 10,000 |
Which device suits the task?
| purpose | superior equipment | reason |
|---|---|---|
| Chat / coding | 2× DGX Spark 256GB | In token generation with the same model, the side with higher memory bandwidth has an advantage. |
| Documents / RAG | 2× DGX Spark 256GB | The side with larger available memory provides more headroom for longer contexts and KV cache. |
| Image / video | Similar | Let's look at generation tool compatibility and available GPU memory together. |
| Setup | Similar | Compare finished product status and initial driver·system configuration burden. |
| Power / space | DGX Spark 128GB | Prioritize the side with lower sustained power load. |
Local pricing
DGX Spark 128GB is approximately 7.9 million KRW cheaper than the mid-range price. Check both perceived speed and task-specific performance.