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Why do battery-powered devices often prioritize power modes over raw performance?

hard📝 Conceptual Q10 of 15
ARM Architecture - Power Modes
Why do battery-powered devices often prioritize power modes over raw performance?
ABecause raw performance always uses less energy
BBecause users prefer devices that never change speed
CBecause power modes make devices heavier
DBecause saving battery life is more important for user experience than maximum speed
Step-by-Step Solution
Solution:

  1. Step 1: Understand the trade-off between performance and battery life

    High performance uses more energy, reducing battery life.

  2. Step 2: Identify user priorities

    Users value longer battery life over constant maximum speed, so power modes help balance this.

  3. Final Answer:

    Because saving battery life is more important for user experience than maximum speed -> Option D

  4. Quick Check:

    Battery life prioritized over speed = True [OK]
Quick Trick: Battery life beats max speed for better user experience [OK]
Common Mistakes:
  • Believing raw performance uses less energy
  • Thinking power modes affect device weight
  • Assuming users want constant speed only

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