SDRAM, or Synchronous Dynamic Random Access Memory, is a type of memory that synchronizes with the system bus, allowing for faster data access compared to traditional DRAM. It is widely used in computers and other devices due to its ability to handle multiple operations simultaneously, improving overall performance. The synchronization with the clock speed of the CPU enables SDRAM to process data more efficiently. This technology has evolved over the years, leading to various types such as DDR (Double Data Rate) SDRAM, which further enhances speed and bandwidth, making it a crucial component in modern computing systems.