Single-rank modules have a single set of chips that can be accessed at once, whereas dual-rank modules have two sets of chips. Multiple ranks can enhance performance by enabling up sattakingthe memory controller to access data from various ranks without having to wait for one to complete before beginning another. enhancing the performance of the system. To maximize system performance, it is crucial to comprehend memory channels as well as ranks. How well RAM can communicate with the CPU and other components is determined by these two ideas.