The difference between an AT case and an ATX case

No, AT has been eliminated, it is the first batch of horizontal cases, the kind where the display is placed on the chassis, and now they are all ATX.

The full name of the AT chassis should be Baby AT, which was mainly used in the early machines that could only support the installation of AT motherboards, and is basically extinct at present. ATX cases are by far the most common type of chassis and support most types of motherboards. The Micro ATX chassis is built on top of the ATX chassis and is smaller than the ATX chassis in order to further save desktop space.

Each type of chassis can only fit the motherboards it supports, and generally cannot be mixed, and the power supply is also different.

It's not an AT case that's a small case, and an ATX case is a big case.

AT has been phased out, ATX chassis are both large and small chassis!

Is it a small motherboard with a small case, a large motherboard with a large case - not exactly! A small motherboard can also be equipped with a large chassis! However, a large motherboard cannot be equipped with a small chassis.

The ATX AT chassis is primarily for power supplies.

AT vs. ATX

There are four outputs (+5V, -5V, +12V, -12V) and an additional signal to the motherboard. The volume of the AT power supply ** is 150mm, 140mm, 86mm.

For computer startup and shutdown, if you use AT power, after turning off the computer power switch, the power is really turned off. Digging and sleeping.

Difference Between ATX Motherboard and M-ATX Motherboard:

1. Size. ATX is the largest format with a size of 305 244 mm. It is followed by the Micro ATX, which is slightly shorter at 244 244 mm.

When it comes to the size itself, if your computer case is smaller than the size required for a certain format, you should only be concerned. On the contrary, there is no need to worry that this situation is "too big" for the motherboard, since each case has a standardized layout designed to accommodate any motherboard that can fit inside.

2. RAM capacity.

One of the biggest differences is the number of RAM slots included in the motherboard design. While ATX and Micro ATX motherboards can support up to four RAM modules. That is, if the 2 16 GB kit is installed, the ATX and Micro ATX can support twice as much memory.

However, this isn't a big disruptive factor for gamers, as even 16 GB of RAM is more than enough for today's gaming PCs. However, professionals who work with more RAM-rich software may prefer to use a motherboard that not only supports a higher total capacity, but also allows the installation of a four-module kit.

3. PCIe slot.

The bigger difference between all two motherboards is the number of PCIe slots included in their respective designs. ATX motherboards are leading the way in this segment, as they can have up to 7 PCIe slots.

Another one is limited, Micro ATX motherboards up to 4. Obviously, PCIe slots are used by graphics cards, but they can also be used by various other expansion cards: sound cards, internal modems, etc. That said, this should be taken into account when making a choice.

Problems that can arise with Micro ATX motherboards especially stem from where the PCIe slot is located at the edge of the board. So, if the motherboard itself is perfect for a certain situation, any serious graphics card cannot be used without extra space.

First, the subject is different.

1. ATX motherboard: It is a combination of the two architectures of Baby AT and LPX, and rotates 90 degrees counterclockwise on the basis of Baby AT.

2. BTX motherboard: It is a new motherboard architecture proposed by Intel and a replacement for ATX structure.

Second, the characteristics are different.

1. ATX motherboard: provide COM port, LPT port, PS 2 mouse interface and PS 2 keyboard interface.

2. BTX motherboard: support low-profile, that is, narrow board design, the system structure will be more compact; For heat dissipation and airflow movements, the circuit layout of the motherboard has been optimized.

Third, the advantages are different.

1. ATX motherboard: comprehensively reduces the overall cost of the system, improves the system ventilation design, and reduces electromagnetic interference.

2. BTX motherboard: The cooling system will be optimized through the pre-installed SRM (Support and Maintain Module), especially for the CPU.

is an abbreviation for Extended ATX, which is mainly used in Rackmount server systems. It is typically used on servers that are not up to the task on dual processors and standard ATX motherboards, and measures 12 13 inches (305mm 330 mm).

The upper part of the EATX motherboard has the same fixing screws as ATX, and is mostly used for high-performance workstations or servers, and EATX is generally very rare in the market because it is mainly designed for workstations. ETX motherboards are larger in size and generally require a special EATX chassis, which is significantly different from ATX in terms of size and location of mounting holes. EatX motherboards are similar in functionality to ATX motherboards but powerful, and are also a few inches larger than standard motherboard sizes.

EATX motherboards are also commonly known as EATX server motherboards, and most of them support more than two CPUs, because for server and workstation motherboards, the most important thing is high reliability and stability, followed by high performance. This is because most servers are at full capacity 24 hours a day, 7 days a week.

Due to the large amount of data processing of servers and workstations, it is necessary to adopt a multi-CPU parallel processing structure, that is, multiple CPUs are installed in a server and workstation; For servers, multiprocessors can be used for high-load, high-speed applications such as database processing; For workstations, multiprocessor systems can be used for high-speed applications such as 3D graphics production and animation file encoding, which are not possible with a single processor.

The ATX chassis is a standard chassis, and the M-ATX chassis is a small chassis. When you open the lid of the ATX case, you can see that the motherboard has 4 rows of screw holes from top to bottom, while the M-ATX generally has only 3 rows. This is the most obvious difference.

There is no big difference in the exterior and internal architecture, except that the M-ATX motherboard is smaller, there are many fewer PCI slots, PCI-E slots than ATX, and some extra ports are omitted.

Specific size: M-ATX The size is about 240mm 260mm, as shown in the figure below, one side of ATX is 305mm, and the other side is 180--250mm, as shown in the figure below.

Standard, the appearance is relatively tall, micro, generally relatively short, and the distance between the front and back may be shorter.

The appearance is not visible above, and you have to look at the product manual to know.