DDR3L is a variant of DDR3 memory that is aimed at enhancing energy efficiency in computing systems. DDR3L operates at a lower voltage of 1.35 volts compared to the standard DDR3 memory that operates at 1.5 volts, resulting in a reduction in energy consumption and heat output. DDR3L is backward compatible with DDR3 and can operate at both voltage levels. The low-voltage feature of DDR3L makes it an ideal choice for laptops, desktops, and mini PCs, especially those that prioritize energy efficiency and low power consumption, such as portable devices that rely on battery power. DDR3L provides reliable performance and saves power, making it a popular option for various computing needs.