E-ATX, or Extended Advanced Technology eXtended, is a motherboard form factor that is larger than the standard ATX size. Typically measuring 12 inches by 13 inches, E-ATX motherboards provide additional space for more components, such as extra RAM slots, PCIe slots, and improved cooling solutions. This makes them popular among gamers and professionals who require high-performance systems. Due to their size, E-ATX motherboards are usually installed in larger cases, which can accommodate the extra dimensions. They are often used in custom-built PCs and workstations, allowing for greater expandability and better airflow. PC gaming, custom-built PCs, and workstations often benefit from this form factor.