This is the sixth in a series of computer science videos is about the fundamental principles of Dynamic Random Access Memory, DRAM, and the essential concepts of DRAM operation. This video develops the concepts of dual channel mode and quad channel mode that were introduced in a previous video. It then explains how the operating speed of a DIMM can be greatly increased by outputting a burst of data for a single row and column address, in a technique known as prefetching. The video also introduces a system known as bank interleaving, which greatly reduces the latency of a DRAM array, thereby keeping the data bus fully occupied when transferring cache lines.