OpenChat 7B needs ~6.9 GB VRAM. Intel Arc Pro A40 6GB has 6.0 GB. With Q3_K_S quantization, expect ~15 tok/s.
Operating mode
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
1.7 GB over capacity — needs offload or smaller quantization
Fit status
Too heavy
Decode
10.4 tok/s
TTFT
18542 ms
Safe context
4K
Memory
7.7 GB / 6.0 GB
Offload
20%
It fits through host-memory offload, and offload is the main reason performance drops.
CPU or host-memory offload is active
About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.
Very little memory headroom
You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.
Runtime ecosystem is narrower than CUDA
Intel GPUs can look attractive on memory per dollar, but local AI tooling, kernels, and model coverage are still broader and easier on CUDA today.
Remove offload with more accelerator memory
Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Prefer CUDA if you want the path of least resistance
If your goal is maximum runtime coverage, easier troubleshooting, and better support for new local AI releases, CUDA is usually still the safer upgrade path.
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | D | Very compromised (needs ~0.5 GB host RAM) | 13.9 tok/s | 7609 ms | 4K |
| Coding | F | Too heavy | 10.4 tok/s | 18542 ms | 4K |
| Agentic Coding | F | Too heavy | 6.5 tok/s | 43351 ms | 4K |
| Reasoning | F | Too heavy | 10.4 tok/s | 21914 ms | 4K |
| RAG | F | Too heavy | 6.5 tok/s | 54189 ms | 4K |
How OpenChat 7B (7B params) fits at each quantization level on Intel Arc Pro A40 6GB (6.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 2.7 GB | Low | B56 |
Q3_K_SBest for your GPU | 3 | 3.4 GB | Low | B56 |
Copy-paste commands to run OpenChat 7B on your machine.
Run
ollama run openchatUpgrade options
Intel Arc A580 8GBBudget pickMakes the model fit on the accelerator instead of staying completely out of reach.
Removes host-memory offload, which is usually the single biggest latency and throughput win.
~$179 MSRP
Intel Arc B570 10GBBest valueMakes the model fit on the accelerator instead of staying completely out of reach.
Removes host-memory offload, which is usually the single biggest latency and throughput win.
~$219 MSRP
Intel Arc B580 12GBIntel upgradeMakes the model fit on the accelerator instead of staying completely out of reach.
Removes host-memory offload, which is usually the single biggest latency and throughput win.
~$249 MSRP
Yes, Intel Arc Pro A40 6GB can run OpenChat 7B at Q3_K_S quantization (Very compromised (needs ~0.4 GB host RAM)). The recommended Q4_K_M requires 7.7 GB which exceeds available memory, but at Q3_K_S it needs only 6.9 GB. Expected decode speed: 15.4 tok/s.
OpenChat 7B (7B parameters) requires approximately 7.7 GB at Q4_K_M quantization. On Intel Arc Pro A40 6GB, it fits at Q3_K_S using 6.9 GB.
The recommended quantization is Q4_K_M, but on Intel Arc Pro A40 6GB the best fitting quantization is Q3_K_S, which uses 6.9 GB.
On Intel Arc Pro A40 6GB, OpenChat 7B achieves approximately 15.4 tokens per second decode speed with a time-to-first-token of 12568ms using Q3_K_S quantization.
For coding workloads, OpenChat 7B on Intel Arc Pro A40 6GB receives a F grade with 10.4 tok/s and 4K context.
On Intel Arc Pro A40 6GB, OpenChat 7B can safely use up to 8K tokens of context at Q3_K_S quantization. The model's official context limit is 8K, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/openchat-7b-on-arc-pro-a40-6gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
| 4 |
3.9 GB |
| Medium |
| F0 |
Q4_K_M | 4 | 4.3 GB | Medium | F0 |
Q5_K_M | 5 | 5.0 GB | High | F0 |
Q6_K | 6 | 5.7 GB | High | F0 |
Q8_0 | 8 | 7.5 GB | Very High | F0 |
F16 | 16 | 14.3 GB | Maximum | F0 |
Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Often yes, if your goal is the easiest setup and the widest runtime support. Intel can offer attractive memory capacity, but CUDA still tends to win on tooling maturity, guides, kernels, and model coverage for local AI.