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Intel Arc Pro B50
Runs downloadable LLMs up to ~19.5B at Q4, ~29-36 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 |
21.7-26.9 t/s ≤110k ctx · then ~3.9-4.8 (slow) |
43.3-53.8 t/s ≤156k ctx · then ~7.7-9.6 (slow) |
77.3-96 t/s ≤176k ctx · then ~13.8-17.1 (slow) |
| 7-8B | won't run |
16.2-20.2 t/s ≤40k ctx · then ~2.9-3.6 (slow) |
29-36 t/s ≤67k ctx · then ~5.2-6.4 (slow) |
| 13B | won't run |
10-12.4 t/s ≤1k ctx · then ~1.8-2.2 (slow) |
17.8-22.2 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 Pro B50. Guidance — exact needs depend on your case, other parts and how much you offload to system RAM.
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About the Intel Arc Pro B50
Intel Arc Pro B50 is a discrete GPU from Intel, 2025. For local genAI the numbers that matter are its 16 GB (how big a model + context fits) and 224 GB/s bandwidth (generation speed).
Frequently asked questions
What size LLM can the Intel Arc Pro B50 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 Pro B50 generate?▶
Generation is bandwidth-bound. At 224 GB/s an 8B model at Q4 runs ~29-36 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 Pro B50?▶
Besides the card: 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.