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DDR4 memory is a type of synchronous dynamic random-access memory (SDRAM) that has a high bandwidth interface, meaning it can transfer data at a faster rate than previous generations of memory. DDR4 was released in 2014 and is the successor to DDR3, which was the standard until then. DDR4 memory has several advantages over DDR3, such as higher module density, lower voltage requirements, and higher data rate transfer speeds. DDR4 memory can support up to 64 GB of capacity per module, compared to 16 GB for DDR3. DDR4 memory also operates at a lower voltage of 1.2 V, which reduces power consumption and heat generation. DDR4 memory can achieve speeds between 800 and 1600 MHz, which is higher than the 400 to 1067 MHz range of DDR3 memory.