text model · Qwen3 · Windows
Can I run Qwen3 8B on 8GB RAM Laptop (CPU/iGPU only)?
No. Qwen3 8B needs ~6.5 GB even at Q4_K_M, but 8GB RAM Laptop (CPU/iGPU only) only has ~5 GB usable.
Needs ~6.5 GB even at Q4_K_M, but only ~5 GB is usable.
- Q4_K_M needed
- ~6.5 GB
- Usable on device
- ~5 GB
- Device memory
- 8 GB
- Parameters
- 8B
- Q4_K_M size
- 5.03 GB
- Q8_0 size
- 8.71 GB
- Context
- 32k
- Ollama tag
- qwen3:8b
- Memory
- 8 GB ram
- Usable for weights
- ~5 GB
- Best runtime
- Ollama (llama.cpp backend)
What you can run instead
Run Qwen3 8B on other hardware
FAQ
Can 8GB RAM Laptop (CPU/iGPU only) run Qwen3 8B?
No. Qwen3 8B needs ~6.5 GB even at Q4_K_M, but 8GB RAM Laptop (CPU/iGPU only) only has ~5 GB usable.
How much memory does Qwen3 8B need?
8GB RAM Laptop (CPU/iGPU only) does not have enough memory. At Q4_K_M the weights are ~5.03 GB; with KV cache and runtime overhead, budget ~6.5 GB at a 4k context.
What is the best tool to run Qwen3 8B 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.
Sources
Memory figures are estimates. See methodology.