text model · LFM · Windows
Can I run LFM2.5 1.2B Thinking on 8GB RAM Laptop (CPU/iGPU only)?
Yes. LFM2.5 1.2B Thinking runs on 8GB RAM Laptop (CPU/iGPU only) at Q4_K_M (~1.8 GB of ~5 GB usable).
Runs at Q4_K_M using ~1.8 GB of ~5 GB usable. You have room for FP16 for higher quality.
That figure is at a 4k context and moves about ±15% as context length changes. 8GB RAM Laptop (CPU/iGPU only) leaves ~3.2 GB of headroom, room to step up to FP16 for higher quality.
- Q4_K_M needed
- ~1.8 GB
- Usable on device
- ~5 GB
- Device memory
- 8 GB
- Best quant
- Q4_K_M
Which quant fits
Running cost · estimate
- Power draw
- ~15 W
- Electricity / 1M tokens
- ~$0.01
- Pays for itself after
- ~714M tok
At ~$0.15/kWh and the estimated ~66 tok/s, a million generated tokens costs about $0.01 in electricity. Versus a hosted API at ~$0.5 per million tokens, the ~$350 8GB RAM Laptop (CPU/iGPU only) pays for itself after roughly 714 million tokens, so local hardware is mostly a fixed cost, not a per-token one. TDP is the peak draw, so this is an upper bound. Assumptions.
Run it
Pick your tool. All 3 load the same Q4_K_M weights.
ollama run lfm2.5-thinking:1.2b llama-cli -hf LiquidAI/LFM2.5-1.2B-Thinking-GGUF:Q4_K_M lms get LiquidAI/LFM2.5-1.2B-Thinking-GGUF - Parameters
- 1.17B
- Q4_K_M size
- 0.68 GB
- Q8_0 size
- 1.16 GB
- Context
- 128k
- Ollama tag
- lfm2.5-thinking:1.2b
- Memory
- 8 GB ram
- Usable for weights
- ~5 GB
- Power draw
- ~15 W
- Best runtime
- Ollama (llama.cpp backend)
You could also run
Run LFM2.5 1.2B Thinking on other hardware
FAQ
Can 8GB RAM Laptop (CPU/iGPU only) run LFM2.5 1.2B Thinking?
Yes. LFM2.5 1.2B Thinking runs on 8GB RAM Laptop (CPU/iGPU only) at Q4_K_M (~1.8 GB of ~5 GB usable).
How much memory does LFM2.5 1.2B Thinking need?
8GB RAM Laptop (CPU/iGPU only) has room to spare. At Q4_K_M the weights are ~0.68 GB; with KV cache and runtime overhead, budget ~1.8 GB at a 4k context.
What is the best tool to run LFM2.5 1.2B Thinking 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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A live badge for your model card or README, updated as the data is. [](https://localmodel.run/can-i-run/lfm2.5-1.2b-thinking/laptop-8gb) 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.