Memory latency refers to the delay between a request for data and the moment that data is available for use. It is a critical factor in computer performance, as lower latency means faster access to information stored in memory. This delay can be influenced by various factors, including the type of memory technology used, the distance between the processor and memory, and the efficiency of the memory controller. In computing, memory latency is often measured in nanoseconds (ns) and can significantly impact tasks that require quick data retrieval, such as gaming or data processing. Understanding memory latency helps in optimizing systems, ensuring that components like CPUs and RAM work efficiently together for better overall performance.