LFM2 24B A2B — Hardware Requirements & GPU Compatibility
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LFM2 24B A2B is a 23.8B-parameter open language model from LiquidAI. It supports a context window of up to 128,000 tokens. At Q4_K_M it needs about 14.77 GB of VRAM — see which GPUs and Macs can run it below.
20.5K downloads
332 likesSpecifications
- Publisher
- LiquidAI
- Parameters
- 23.8B
- Architecture
- Lfm2MoeForCausalLM
- Context Length
- 128,000 tokens
- Vocabulary Size
- 65,536
- Release Date
- 2026-02-24
- License
- Other
Get Started
HuggingFace
How Much VRAM Does LFM2 24B A2B Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| Q2_K | 3.40 | 10.6 GB | 20.9 GB | 10.13 GB | 2-bit quantization with K-quant improvements |
| Q3_K_S | 3.50 | 10.9 GB | 21.2 GB | 10.43 GB | 3-bit small quantization |
| Q3_K_M | 3.90 | 12.1 GB | 22.4 GB | 11.62 GB | 3-bit medium quantization |
| Q4_0 | 4.00 | 12.4 GB | 22.7 GB | 11.92 GB | 4-bit legacy quantization |
| Q4_K_M | 4.80 | 14.8 GB | 25.1 GB | 14.31 GB | 4-bit medium quantization — most popular sweet spot |
| Q5_K_M | 5.70 | 17.5 GB | 27.8 GB | 16.99 GB | 5-bit medium quantization — good quality/size tradeoff |
| Q6_K | 6.60 | 20.1 GB | 30.5 GB | 19.67 GB | 6-bit quantization, very good quality |
| Q8_0 | 8.00 | 24.3 GB | 34.6 GB | 23.84 GB | 8-bit quantization, near-lossless |
Which GPUs Can Run LFM2 24B A2B?
Q4_K_M · 14.8 GBLFM2 24B A2B (Q4_K_M) requires 14.8 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 20+ GB is recommended. Using the full 128K context window can add up to 10.3 GB, bringing total usage to 25.1 GB. 26 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti, NVIDIA GeForce RTX 5080.
Runs great
— Plenty of headroom
Decent
— Enough VRAM, may be tightWhich Devices Can Run LFM2 24B A2B?
Q4_K_M · 14.8 GB47 devices with unified memory can run LFM2 24B A2B, including NVIDIA DGX H100, NVIDIA DGX A100 640GB, Mac Mini M4 (16 GB).
Runs great
— Plenty of headroomWhere to Download LFM2 24B A2B
Community quantizations of this model — GGUF for llama.cpp, Ollama, and LM Studio, plus AWQ/MLX variants where available.
Frequently Asked Questions
- How much VRAM does LFM2 24B A2B need?
LFM2 24B A2B requires 14.8 GB of VRAM at Q4_K_M, or 48.2 GB at BF16. Full 128K context adds up to 10.3 GB (25.1 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 23.8B × 4.8 bits ÷ 8 = 14.3 GB
KV Cache + Overhead ≈ 0.5 GB (at 2K context + ~0.3 GB framework)
KV Cache + Overhead ≈ 10.8 GB (at full 128K context)
VRAM usage by quantization
Q4_K_M14.8 GBQ4_K_M + full context25.1 GB- Can NVIDIA GeForce RTX 4090 run LFM2 24B A2B?
Yes, at Q6_K (20.1 GB) or lower. Higher quantizations like Q8_0 (24.3 GB) exceed the NVIDIA GeForce RTX 4090's 24 GB.
- What's the best quantization for LFM2 24B A2B?
For LFM2 24B A2B, Q4_K_M (14.8 GB) offers the best balance of quality and VRAM usage. Q4_K_L (15.1 GB) provides better quality if you have the VRAM. The smallest option is IQ2_XXS at 7.0 GB.
VRAM requirement by quantization
IQ2_XXS7.0 GBQ2_K10.6 GBIQ4_XS13.3 GBQ4_K_M ★14.8 GBQ4_K_L15.1 GBBF1648.2 GB★ Recommended — best balance of quality and VRAM usage.
- Can I run LFM2 24B A2B on a Mac?
LFM2 24B A2B requires at least 7.0 GB at IQ2_XXS, which exceeds the unified memory of most consumer Macs. You would need a Mac Studio or Mac Pro with a high-memory configuration.
- Can I run LFM2 24B A2B locally?
Yes — LFM2 24B A2B can run locally on consumer hardware. At Q4_K_M quantization it needs 14.8 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- How fast is LFM2 24B A2B?
At Q4_K_M, LFM2 24B A2B can reach ~298 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~44 tok/s. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.
tok/s = (bandwidth GB/s ÷ model GB) × efficiency
Example: NVIDIA B200 → 8000 ÷ 14.8 × 0.65 = ~352 tok/s
Estimated speed at Q4_K_M (14.8 GB)
~352 tok/s~44 tok/s~352 tok/s~298 tok/sReal-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.
- What's the download size of LFM2 24B A2B?
At Q4_K_M, the download is about 14.31 GB. The full-precision BF16 version is 47.69 GB. The smallest option (IQ2_XXS) is 6.56 GB.
- Which GPUs can run LFM2 24B A2B?
26 consumer GPUs can run LFM2 24B A2B at Q4_K_M (14.8 GB). Top options include AMD Radeon RX 7900 XTX, NVIDIA GeForce RTX 3090, NVIDIA GeForce RTX 3090 Ti, AMD Radeon RX 6800. 7 GPUs have plenty of headroom for comfortable inference.
- Which devices can run LFM2 24B A2B?
49 devices with unified memory can run LFM2 24B A2B at Q4_K_M (14.8 GB), including AMD Ryzen AI 9 HX 370 (Strix Point) Laptop, ASUS Ascent GX10, Asus ROG Flow Z13 (2025, Ryzen AI Max+ 395, 128 GB), Beelink GTR9 Pro (Ryzen AI Max+ 395, 128 GB). Apple Silicon Macs use unified memory shared between CPU and GPU, making them well-suited for local LLM inference.