What is the itx form factor?

The ITX form factor is a series of motherboard specifications that emphasize compactness and efficiency, primarily designed for small form factor (SFF) builds. The most common variant, Mini-ITX, measures 17 x 17 cm (6.7 x 6.7 inches) and supports a limited number of expansion slots and connectors, making it ideal for space-constrained applications like Home Theater PCs or compact gaming rigs. Other variants, such as Nano-ITX and Pico-ITX, are even smaller and cater to ultra-compact designs. Overall, ITX motherboards prioritize a balance between performance and size, allowing for versatile and portable computing solutions.