DDR memory is a type of computer memory that stands for Double Data Rate. Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM) is a type of memory integrated circuit used in computers . DDR SDRAM, also known as DDR1 SDRAM, has been superseded by DDR2 SDRAM, DDR3 SDRAM, DDR4 SDRAM and DDR5 SDRAM . The name “Double Data Rate” comes from the fact that DDR memory can transfer data on both the rising and falling edges of the clock signal, effectively doubling the data transfer rate compared to Single Data Rate (SDR) memory .