Can I Run InternLM 3 20B Instruct on NVIDIA GeForce RTX 3070?

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

Written by Jakub Rusinowski · Last updated August 15, 2026

No. InternLM 3 20B Instruct needs 12.1 GB at Q4_K_M and the NVIDIA GeForce RTX 3070 has only 8 GB. No quantization we publish closes a gap that size.

The numbers

Model	InternLM 3 20B Instruct
Parameters	20B
Quantization	Q4_K_M
VRAM needed	12.1 GB
NVIDIA GeForce RTX 3070 VRAM	8 GB
Verdict	Does not fit

What to do next

Either step down to a smaller size in this family, or move to a NVIDIA GeForce RTX 5080 (16 GB), the cheapest card we track with enough VRAM.

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Cheapest card we track with enough VRAM for InternLM 3 20B Instruct:

NVIDIA GeForce RTX 5080 16GB

16 GB VRAM · 360 W board power

2026 prices are volatile — check the current listing.

Check price on Amazon

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

InternLM 3 20B Instruct needs ~12 GB but this GPU has 8 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:

Affiliate links — we may earn a commission if you sign up, at no extra cost to you.

RunPod $0.34/hr

Rent on RunPod →

Vast.ai $0.35/hr · typical low · varies

Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

Other InternLM 3 sizes on the NVIDIA GeForce RTX 3070

InternLM 3 8B Instruct — runs (5.3 GB)

InternLM 3 20B Instruct on nearby hardware

NVIDIA GeForce RTX 3080 (10GB) (10 GB) — runs at a lower quant

All InternLM 3 sizes on the NVIDIA GeForce RTX 3070 | VRAM calculator for InternLM 3 20B Instruct | NVIDIA GeForce RTX 3070 GPU page | Check your hardware