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Identify the error in this statement: "Increasing bus width always improves system performance regardless of other factors."

medium📝 Analysis Q6 of 15
ARM Architecture - Bus Architecture
Identify the error in this statement: "Increasing bus width always improves system performance regardless of other factors."
ABus width only affects graphics performance
BBus width does not affect performance at all
CIncreasing bus width reduces CPU speed
DBus width alone cannot improve performance without matching clock speed
Step-by-Step Solution
Solution:
  1. Step 1: Analyze bus width impact

    Bus width increases data per cycle but performance also depends on clock speed and other system parts.
  2. Step 2: Understand system balance

    If clock speed is low, wider bus may not improve performance significantly.
  3. Final Answer:

    Bus width alone cannot improve performance without matching clock speed -> Option D
  4. Quick Check:

    Bus width impact depends on clock speed too [OK]
Quick Trick: Bus width needs matching clock speed for gains [OK]
Common Mistakes:
  • Assuming bus width alone fixes performance
  • Ignoring clock speed effects
  • Thinking bus width slows CPU

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