Yield = (1 + (Defect per unit area * die area) / 4.0) ^ -4.0
= (1 + (0.3 * 389/100) / 4.0) ^ -4.0
= (1 + 0.29) ^ -4.0
= (1.29) ^ -4.0
= 0.36
What is the yield for the Sun Niagra?
Yield = (1 + (Defect per unit area * die area) / 4.0) ^ -4.0
= (1 + (0.75 * 380/100) / 4.0) ^ -4.0
= (1 + 0.71) ^ -4.0
= (1.71) ^ -4.0
= 0.12
Why does the IBM Power5 have a lower defect rate than the Niagara?
Because it uses different process technology, it uses larger transistor feature size.
2) Power Consumption in Computer Systems
Power consumption in modern systems is dependent on a variety of factors, including the chip clock frequency, efficiency, the disk drive speed, disk drive utilization, and DRAM.
Figure 1.23 presents the power consumption of several computer system components. In this exercise, we will explore how the hard drive affects power consumption for the system.
Assuming the maximum load for each component, and a power supply efficiency of 80%, what wattage must the server’s power supply deliver to a system with an Intel Pentium 4 chip, 4 GB 240-pin Kingston DRAM, and one 7200 rpm hard drive?
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