Now let’s turn our attention to memory power. Download a copy of the Micron power calculator from this link: https://www.micron.com//media/documents/products/power-calculator/ddr3_power_calc.xlsm. This spreadsheet is preconfigured to estimate the power dissipation in a single 2 Gb 8 DDR3 SDRAM memory chip manufactured by Micron. Click on the “Summary” tab to see the power breakdown in a single DRAM chip under default usage conditions (reads occupy the channel for 45% of all cycles, writes occupy the channel for 25% of all cycles, and the row buffer hit rate is 50%). This chip consumes 535 mW, and the breakdown shows that about half of that power is expended in Activate operations, about 38% in CAS operations, and 12% in background power. Next, click on the “System Config” tab. Modify the read/write traffic and the row buffer hit rate and observe how that changes the power profile. For example, what is the decrease in power when channel utilization is 35% (25% reads and 10% writes), or when row buffer hit rate is increased to 80%?