DDR4 (Double Data Rate 4) is a type of synchronous dynamic random-access memory (SDRAM) widely used in modern computers and servers. It offers higher speed and efficiency compared to its predecessor, DDR3, with data transfer rates ranging from 1600 to 3200 MT/s and beyond. DDR4 operates at lower voltage (1.2V) for improved energy efficiency and supports larger capacities, making it ideal for multitasking, gaming, and high-performance computing tasks. Its improved bandwidth and reliability have made DDR4 the standard choice for a wide range of computing applications.