1) If architectural enhancement A speeds up 29% of the executed instructions by 3 cycles and architectural enhancement B speeds up 44% of the executed instructions by 2 cycles, which enhancement provides more speedup? Show your calculations.

2. If 30% of the instructions take 1 cycle to execute, 20% take 2 cycles, 30% take 3 cycles, and 20% take 4 cycles, what is the average CPI?

3.What was the main reason that ended the decades-long rapid increase in single-core per-formance?

4.how do microprocessor manufacturers primarily use additional transistors that become available with every new chip generation?



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