30-SECOND SUMMARY
What to take away
- CPU-only tests can begin with a quantized 1B–3B model.
- Check instruction-set support, storage, cooling, and RAM together.
- Judge reuse by task completion, not headline speed.
Test the old laptop first
Measure before replacing it.
- 01INSPECT
CPU, RAM, storage
- 02SMALL
Choose 1B–3B Q4
- 03RUN
Build a CPU baseline
- 04DECIDE
Check task success
Inventory the machine
Record the OS, exact CPU, RAM, and free storage, then compare them with the runtime requirements. An old CPU can have enough RAM yet lack a required instruction set.
Connect power and clear the vents before sustained inference.
Create a small baseline
Close memory-heavy apps, use a 1B–3B Q4 model and short context, then repeat the same prompt.
ollama run gemma3:1b
ollama psChoose realistic work
Test short rewriting, classification, and summaries that a person can verify. Long documents and concurrent users may require newer hardware.
Decide whether to upgrade
Extra RAM or an SSD can help when the CPU remains supported. Replacement is more rational when compatibility, battery, or cooling costs dominate.
Frequently asked questions
Is a GPU required?
No. Small models can run on CPU, although slowly.
Can 8GB work?
It may support small, short tests if other applications are closed.
Should I use private files first?
No. Validate stability and the data path with public material first.
Primary sources
Check the original documentation for version-specific details.
Ollama hardware support