What is the full-size motherboard dimension that is compatible with ATX cases?

The full-size motherboard dimension that is compatible with ATX cases is 12" x 9.6" (304mm x 244mm). This dimension is specifically defined for standard ATX motherboards, which is a common motherboard form factor. The size allows for the correct mounting of the motherboard into ATX chassis and ensures alignment with the I/O ports on the back panel of the case.

Understanding motherboard dimensions is crucial for building or upgrading computers, as it ensures compatibility with cases, power supplies, and cooling solutions. ATX motherboards typically have additional features and expansion slots, making them a popular choice for desktops. Recognizing the full-size ATX dimensions aids users in selecting the right components for a functional and efficient system build.