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Hardware & Performance

Laptop vs Desktop for Local LLMs: Which Should You Choose?

Β·9 min readΒ·Von Hans Kuepper Β· GrΓΌnder von PromptQuorum, Multi-Model-AI-Dispatch-Tool Β· PromptQuorum

Laptops are portable but thermally limited (7–13B models max, ~15 tok/sec). Desktops offer unlimited scalability (any model, 100+ tok/sec). As of April 2026, choose laptop for mobility, desktop for power.

Wichtigste Erkenntnisse

  • Laptop: 7–13B models, ~15–25 tok/sec, $1500–3000, portable.
  • Desktop: 7B–70B models, 80–150 tok/sec, $1500–4000, stationary.
  • Thermal constraints make laptops impractical for sustained inference.
  • As of April 2026, both are viable, but for different use cases.

Performance: Laptop vs Desktop

HardwareModel TestedSpeedThermal Throttling
MacBook Pro 16" M3 Maxβ€”25 tok/secβ€”
Framework Laptop 16" + GPUβ€”45 tok/secβ€”
Desktop RTX 4070 Tiβ€”80 tok/secβ€”
Desktop RTX 4090β€”Impossible (laptop)β€”

Thermal Constraints on Laptops

Laptops have limited cooling. CPU + GPU at full load = high temperature, throttling.

MacBook Pro M3 Max: Thermal throttles after 15–20 minutes of sustained inference.

Gaming laptops: Better cooling, but still throttle after 30–45 minutes.

Solution: Use laptop for short bursts (chat, experimentation), not 24/7 services.

Cost Comparison

OptionTotal CostLLM SpeedCost Efficiency
MacBook Pro 16" M3 Maxβ€”25 tok/secβ€”
MacBook + external GPU enclosureβ€”80 tok/secβ€”
Desktop RTX 4070 Tiβ€”80 tok/secβ€”
Desktop RTX 4090β€”150 tok/secβ€”

When to Choose Laptop vs Desktop

Choose laptop if:

  • You need portability and work from multiple locations.
  • You run short inference sessions (chat, experimentation).
  • You already own a high-end MacBook or gaming laptop.

When to Choose Desktop

Choose desktop if:

  • You run 70B models or need 80+ tok/sec.
  • You run services 24/7 (APIs, batch processing).
  • You prioritize cost efficiency.
  • You want to avoid thermal throttling.

Sources

  • MacBook Pro M3 Specs β€” apple.com/macbook-pro
  • Framework Laptop β€” frame.work

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