DDR3, or Double Data Rate Type Three Synchronous Dynamic Random Access Memory, is a type of memory used in computers and other devices. It offers improved speed and efficiency compared to its predecessor, DDR2, allowing for faster data transfer rates and better performance in multitasking environments. This memory technology is commonly found in desktops, laptops, and gaming consoles. DDR3 operates at a voltage of 1.5V, which helps reduce power consumption while maintaining high performance. Its widespread adoption has made it a standard choice for many computing applications.