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Intel Arc A770 16GB
Runs downloadable LLMs up to ~19.5B at Q4, ~72.5-90 tok/s on an 8B model.
What you can run
At 8k context, FP16 KV. Full-speed tok/s holds up to "max ctx"; beyond it the context spills to system RAM (CPU/PCIe offload) and drops to the degraded figure.
| Model size | FP16 | Q8 | Q4 |
|---|---|---|---|
| 3B |
54.1-67.2 t/s ≤110k ctx · then ~3.9-4.8 (slow) |
108.3-134.4 t/s ≤156k ctx · then ~7.7-9.6 (slow) |
193.3-240 t/s ≤176k ctx · then ~13.8-17.1 (slow) |
| 7-8B | won't run |
40.6-50.4 t/s ≤40k ctx · then ~2.9-3.6 (slow) |
72.5-90 t/s ≤67k ctx · then ~5.2-6.4 (slow) |
| 13B | won't run |
25-31 t/s ≤1k ctx · then ~1.8-2.2 (slow) |
44.6-55.4 t/s ≤36k ctx · then ~3.2-4 (slow) |
| 32B | won't run | won't run | won't run |
| 70B | won't run | won't run | won't run |
| 120B | won't run | won't run | won't run |
| 400B | won't run | won't run | won't run |
Estimate: tok/s ≈ bandwidth ÷ (params × bytes/param) × efficiency (Intel). Cyan = fits ~14.7 GB usable. Beyond "ctx", KV spills to system RAM (CPU/PCIe offload) (rough degraded speed shown).
What else you need for a full build▶
Minimum supporting components for a desktop built around the Intel Arc A770 16GB. Guidance — exact needs depend on your case, other parts and how much you offload to system RAM.
Run popular models on the Intel Arc A770 16GB
Videos about the Intel Arc A770 16GB
Finally! An Intel Arc A770 LLM benchmark video! XMX tensors on LMStudio, Ollama and OpenVino
Intel Arc A770 revisited - Round 2 of LLM testing: ipex-llm, vLLM, and OpenArc dual gpu
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About the Intel Arc A770 16GB
Intel Arc A770 16GB is a discrete GPU from Intel on Alchemist, 2022. For local genAI the numbers that matter are its 16 GB (how big a model + context fits) and 560 GB/s bandwidth (generation speed). Plan for a ~650W power supply.
Frequently asked questions
What size LLM can the Intel Arc A770 16GB run?▶
With ~14.7 GB usable it runs up to ~19.5B at Q4 (~6B at FP16) at 8k context. Bigger spills into system RAM (CPU/PCIe offload) and slows sharply.
How many tokens/sec does the Intel Arc A770 16GB generate?▶
Generation is bandwidth-bound. At 560 GB/s an 8B model at Q4 runs ~72.5-90 tok/s (estimate).
Why does long context slow it down?▶
The KV cache for the context must also fit fast memory; once weights+KV exceed 14.7 GB it spills to system RAM (CPU/PCIe offload) and throughput collapses. Each row shows the max usable context.
What else do I need to run the Intel Arc A770 16GB?▶
Besides the card: a ≥650W 80+ Gold power supply, at least 16GB of system RAM (2× the 16GB VRAM is ideal for CPU offload), a free PCIe x16 slot, any modern multi-core CPU, and a ≥1TB NVMe SSD for model weights.