[20] In the default configuration, a rank consists of eight 8 2 Gb DRAM chips. A rank can also comprise164 chips or 416 chips. You can also vary the capacity of each DRAM chip—1 Gb, 2 Gb, and 4 Gb....

[20] In the default configuration, a rank consists of eight 8 2 Gb DRAM chips. A rank can also comprise164 chips or 416 chips. You can also vary the capacity of each DRAM chip—1 Gb, 2 Gb, and 4 Gb. These selections can be made in the “DDR3 Config” tab of the Micron power calculator. Tabulate the total power consumed for each rank organization. What is the most power-efficient approach to constructing a rank of a given capacity?