Compare the cost/performance ratio with and without this improvement. When processor designers consider a possible improvement to
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Compare the cost/performance ratio with and without this improvement.
When processor designers consider a possible improvement to the processor datapath, the decision usually depends on the cost/performance trade-off. In the following three problems, assume that we are starting with a datapath from Figure 4.2, where I-Mem, Add, Mux, ALU, Regs, D-Mem, and Control blocks have latencies of 400ps, 100ps, 30ps, 120ps, 200ps, 350ps, and 100ps, respectively, and costs of 1000, 30, 10, 100, 200, 2000, and 500, respectively. The remaining three problems in this exercise refer to the following processor improvement:
Figure 4.2
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Computer Organization And Design The Hardware Software Interface
ISBN: 9780123747501
4th Revised Edition
Authors: David A. Patterson, John L. Hennessy
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