text model · LFM · Windows

Can I run LFM2 24B-A2B on Nvidia GeForce RTX 4070 (12GB)?

Compatibility verdict VRAM threshold engine

No, not enough memory would not load

No. LFM2 24B-A2B needs ~15.4 GB even at Q4_K_M, but Nvidia GeForce RTX 4070 (12GB) only has ~11 GB usable.

Needs ~15.4 GB Device usable ~11 GB

Needs ~15.4 GB even at Q4_K_M, but only ~11 GB is usable.

That figure is at a 4k context and moves about ±15% as context length changes.

The gap is about 4.4 GB: LFM2 24B-A2B needs roughly 15.4 GB at Q4_K_M and Nvidia GeForce RTX 4070 (12GB) leaves only about 11 GB usable for a model. The lightest tracked hardware that runs LFM2 24B-A2B is the Apple M4 (24GB) at 24 GB. See LFM2 24B-A2B on Apple M4 (24GB).

Q4_K_M needed: ~15.4 GB
Usable on device: ~11 GB
Device memory: 12 GB

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Which quant fits

Quant ladder vs ~11 GB usable

Q2_K

~12.1 GB

Q3_K_M

~13.7 GB

Q4_K_M

~15.4 GB

Q5_K_M

~19.1 GB

Q6_K

~21.7 GB

Q8_0

~25.6 GB

FP16

~46.4 GB

The line marks Nvidia GeForce RTX 4070 (12GB)'s ~11 GB budget; rungs past it are too large.

Model LFM

Parameters: 24B (MoE, 2.3B active)
Q4_K_M size: 13.43 GB
Q8_0 size: 23.61 GB
Context: 32k
Ollama tag: lfm2:24b

Full LFM2 24B-A2B requirements →

Device Windows

Memory: 12 GB vram
Usable for weights: ~11 GB
Power draw: ~200 W
Best runtime: Ollama (CUDA) / vLLM (Linux)

Best models for Nvidia GeForce RTX 4070 (12GB) →

What you can run instead

Run LFM2 24B-A2B on other hardware

Apple M4 (24GB)Apple M4 Pro (24GB)Nvidia GeForce RTX 4090 (24GB)Nvidia GeForce RTX 3090 (24GB)AMD Radeon RX 7900 XTX (24GB)Nvidia GeForce RTX 5090 (32GB)

FAQ

Can Nvidia GeForce RTX 4070 (12GB) run LFM2 24B-A2B?

No. LFM2 24B-A2B needs ~15.4 GB even at Q4_K_M, but Nvidia GeForce RTX 4070 (12GB) only has ~11 GB usable.

How much memory does LFM2 24B-A2B need?

Nvidia GeForce RTX 4070 (12GB) does not have enough memory. At Q4_K_M the weights are ~13.43 GB; with KV cache and runtime overhead, budget ~15.4 GB at a 4k context. It is a Mixture-of-Experts model (24B total / 2.3B active), so all experts must stay in memory; memory tracks total params, not active params.

What is the best tool to run LFM2 24B-A2B on Windows?

LM Studio for a simple setup; Ollama (CUDA) for the most speed. AMD GPUs run via Vulkan/ROCm at roughly half CUDA throughput. NVIDIA is the smooth path on Windows.

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Markdown

[![LFM2 24B-A2B on Nvidia GeForce RTX 4070 (12GB)](https://localmodel.run/badge/lfm2-24b-a2b/nvidia-rtx-4070-12gb.svg)](https://localmodel.run/can-i-run/lfm2-24b-a2b/nvidia-rtx-4070-12gb)

Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.