RAM (Random Access Memory) is a type of computer memory that provides fast, temporary storage for data and programs currently being used by the CPU. Unlike permanent storage devices like HDDs or SSDs, RAM is volatile, meaning it loses its data when the computer is turned off. RAM allows for quick read and write access, enabling the CPU to retrieve and process data much faster than from long-term storage. This makes RAM crucial for overall system performance, affecting how smoothly applications run and how efficiently a computer multitasks. The more RAM a system has, the more data it can handle simultaneously, improving performance in tasks such as gaming, video editing, and running multiple applications.