Can NVIDIA DGX Spark (GB10) · 64 GB run Qwen3.5 122B-A10B?
64 GB unified · 273 GB/s memory bandwidth · Qwen3.5 122B-A10B has 125B parameters (10B active per token).
Short answer
No. It doesn't fit in memory.
Needs ≈59 GB but only ≈57 GB is available after the OS, other apps and Open WebUI.
Why it doesn’t fit
Even its smallest practical version (Q3_K_M) needs about 59 GB for the model, its context memory and the runtime. After the operating system (≈3.2 GB), a browser with a few tabs (≈3.0 GB) and Open WebUI (≈1.0 GB), NVIDIA DGX Spark (GB10) · 64 GB has about 57 GB left, so it’s 1.7 GB short.
Ways to make it work
Close everything else
With no other apps open, Qwen3.5 122B-A10B runs at Q3_K_M: Borderline at 30–40 tok/s. Expect the system to feel tight while it’s loaded.
Pick a smaller model from the same family
Get more memory
The same machine with 128 GB handles it: Excellent.
Check your exact setup
These pages assume typical settings. A shorter context or a lighter chat app can change the answer.
Check NVIDIA DGX Spark (GB10) · 64 GB
The same applies to every workload we rate (chat, coding questions, coding in a repository, agentic coding and long documents): they all need at least as much memory as chat.
Other models for NVIDIA DGX Spark (GB10) · 64 GB
The best-rated models for chat on this machine.
- Qwen3.6 35B-A3B60–80 tok/sExcellent
- Qwen3-Next 80B-A3B Instruct80–110 tok/sExcellent
- Gemma 4 26B-A4B45–60 tok/sExcellent
- Qwen3.5 35B-A3B60–80 tok/sExcellent
- LFM2.5 24B-A2B120–160 tok/sExcellent
- gpt-oss-20b≈75 tok/sExcellent
Cheapest machines for Qwen3.5 122B-A10B
Hardware rated comfortable or better for chat, lowest price first.
- Ryzen AI Max+ 395 mini PC / Framework Desktop · 128 GB$2,000 · 25–30 tok/sExcellent
- Mac Studio M2 Max 96 GB$3,799 · 30–40 tok/sExcellent
- MacBook Pro M3 Max 96 GB$3,999 · 25–35 tok/sExcellent
- Mac Studio M5 Max 128 GB$4,099 · 35–55 tok/sExcellent
- Mac Studio M4 Max 128 GB$4,099 · 35–45 tok/sExcellent
- MacBook Pro M2 Max 96 GB$5,099 · 30–40 tok/sExcellent
Same chip, other memory: 128 GB
Different tool, context size or workload?
These pages use typical settings. The full check models your exact setup.