Can I Run InternLM 3 20B Instruct on Intel Arc B580?

Name: LLM Configurator — GPU VRAM Checker
Author: LLM Configurator

Written by Jakub Rusinowski · Last updated August 15, 2026

Not at Q4_K_M — that needs 12.1 GB and the Intel Arc B580 has 12 GB. Drop to Q3_K_M and it fits in 10.9 GB, with up to 8K of context.

The numbers

Model	InternLM 3 20B Instruct
Parameters	20B
Quantization	Q4_K_M
VRAM needed	12.1 GB
Intel Arc B580 VRAM	12 GB
Verdict	Runs at a lower quant
Fits at	Q3_K_M (10.9 GB)
Max context	8K

What to do next

Quantize to Q3_K_M. That is the cheapest fix — it costs some quality but no money.

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Running InternLM 3 20B Instruct on this card:

Intel Arc B580 12GB

12 GB VRAM · 190 W board power

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Won't fit — rent InternLM 3 20B Instruct instead

InternLM 3 20B Instruct needs ~12 GB but this GPU has 12 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:

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RunPod $0.34/hr

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