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The **ATX (Advanced Technology eXtended) motherboard** was introduced by Intel in 1995, setting a new standard for PC architecture that would dominate the market for decades. This form factor improved upon its predecessor, the AT form, by offering better layout and component accessibility.

One of the key features of the ATX motherboard is its **improved airflow**, made possible by repositioning components like the CPU and RAM to avoid crowding. It also includes an **integrated I/O panel**, making it easier to connect peripherals without the need for add-on cards. The **standard power connector** in ATX boards is another major advancement, providing a single connector to power the motherboard, simplifying assembly and improving compatibility.

ATX motherboards typically measure **12 x 9.6 inches (305 x 244 mm)**, providing ample space for multiple expansion slots like **PCIe** for GPUs and other components. This has allowed ATX boards to remain highly flexible and customizable for both gaming rigs and professional workstations.

The versatility of ATX, combined with its large footprint, makes it ideal for users looking for high-performance builds with multiple expansion options.

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