The ATX (Advanced Technology eXtended) form factor is characterized by its standardized dimensions of 305 mm x 244 mm (12 in x 9.6 in), which allows for organized layout and compatibility with a wide range of components. It features multiple expansion slots, typically including PCIe, and has a designated area for mounting the motherboard, power supply, and cooling systems. Additionally, ATX cases provide improved airflow and cable management options, contributing to better thermal performance. The design also allows for easy access to ports and connectors, enhancing usability and functionality.
ATX is the form factor.
ATX
There are no similar form factors to ATX if you're talking about a slimline. Slimline form factors are NLX and LPX. The form factors to ATX are BTX, Micro-ATX, and Flex-ATX. There is no correlation between slimline and ATX.
ATX is the form factor which Motherboards, Computer Cases and Graphics Cards use to standardise sizing. An ATX form-factor Motherboard will fit an ATX Case, and an ATX Graphics Card will fit in the case as well.
MB is ATX form factor.
ATX
Before the ATX form factor was released, XT, AT, and BabyAT were the most common standard form factors.
ATX
ATX.
atx,nlx,btx
The three form factors for desktop system boards are: ATX, and BTX and NLX
xl atx i think