SDS exploits existing memory address bus for transferring individual chip select (ICS) signals. This causes extra switchings on the address bus. We evaluated this impact on the address bus energy consumption, which is negligible compared to the entire energy consumption of DRAM system. The total bus energy consumption including address and data busses would even decrease when the data bus energy
reduction obtained by SDS is taken into account. Note that, DRAM address bus energy overheads are taken into account in the experimental results.