DDR3 SDRAM (Double Data Rate Type 3 Synchronous Dynamic Random Access Memory) is a type of computer memory used in various devices, including personal computers and laptops. It offers improved performance over its predecessor, DDR2, by allowing data to be transferred twice per clock cycle, which enhances speed and efficiency. This memory type typically operates at voltages of 1.5V, making it more energy-efficient than earlier versions. DDR3 SDRAM is available in different capacities and speeds, making it suitable for a wide range of applications, from basic computing tasks to more demanding operations like gaming and graphic design.