DDR3L is a type of computer memory known as Double Data Rate 3 Low Voltage Synchronous Dynamic Random Access Memory. It is designed to operate at a lower voltage than standard DDR3, which helps reduce power consumption and heat generation, making it ideal for laptops and mobile devices. This memory type supports data transfer rates ranging from 800 to 1600 MT/s (megatransfers per second) and is compatible with both DDR3 and DDR3L motherboards. Its efficiency and performance make it a popular choice for modern computing applications, balancing speed and energy efficiency.