What does atx motherboard mean?

The atx motherboard is an improved AT motherboard, which optimizes the component layout on the motherboard; in the ATX motherboard design, due to the increased horizontal width, the CPU slot can be placed next to the memory slot, so that When inserting a long card, it will not occupy the CPU space, and the replacement of the memory module is more convenient.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The atx motherboard is an improved AT motherboard.

ATX motherboard (12×9.6, 305×244mm)

The ATX motherboard (AT Extend) structure was developed by Intel in 1995 proposed in July. The ATX structure is a new structural design that can better support power management.

ATX In the design of the motherboard, due to the increased horizontal width, the CPU slot can be placed next to the memory slot, so that the CPU space will not be occupied when inserting a long card, and the replacement of the memory module is easy. More convenient.

The soft and hard disk connection port has been moved from the edge of the motherboard to the middle, so that after installation, it is closer to the hard disk and floppy drive on the chassis, which facilitates wiring and reduces electromagnetic interference. . The power supply is located on the right side of the CPU slot. The single-sided bracket fan of the power supply can directly dissipate heat to the CPU and components in the chassis. Most of the peripheral interfaces are integrated on the motherboard, which effectively reduces electromagnetic interference and improves the situation where various device connections compete for space.

The advantages of the ATX structure are: first, it comprehensively improves the installation, disassembly and use of hardware; second, it is more convenient to support various existing multimedia cards and new future equipment; third, it comprehensively reduces the overall cost of the system. ; The fourth is to improve the system ventilation design; the fifth is to reduce electromagnetic interference and make the interior space more concise. The EMB-875A in AAEON's Embedded M/B series products has this specification.

Motherboard shape

The motherboard shape is rotated 90 degrees based on the Baby AT , its geometric size is changed to 30.5cm×24.4cm.

Using 7 I/O slots, the locations of the CPU, I/O slots, and memory slots are more reasonable.

Optimized the location of soft and hard drive interfaces.

Improved the compatibility and scalability of the motherboard.

Adopts enhanced power management to truly realize computer software on/off and green energy-saving functions.

ATX (AT eXternal) board type:

Its layout is a "horizontal" board design, just like the Baby-AT board type turned upside down, like this The space for the motherboard's lead-out port is increased so that the motherboard can integrate more expansion functions.

Since Intel published the original ATX official specification in 1995, this specification has undergone many changes; the latest version 2.3 specification was published in 2007. Standard ATX host version, 12 inches long and 9.6 inches wide (305mm x 244mm). This also allows standard ATX cases to accommodate smaller microATX motherboards.

In 2003, Intel released a new BTX motherboard specification as an alternative specification to ATX. Even so, the ATX specification is still the most popular motherboard specification for assembling computers, so Intel gave up the continued development of the BTX specification in 2006.

ATX motherboards are widely used in home computers. They are more advanced and reasonable in design than AT motherboards, and are better integrated with ATX power supplies. ATX motherboards are larger than AT motherboards, and the floppy drive and IDE interface have been transplanted. In the middle of the motherboard, the keyboard and mouse interfaces have also been changed from COM interfaces to PS/2 interfaces, and the COM interface, printing interface and PS/2 interface are directly integrated on the motherboard.

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