Classification by size: according to the size of the chassis, the chassis can be divided into ultra-thin, half high, 3 / 4 high and full high chassis. According to the shape classification: the chassis can be divided into vertical chassis and horizontal chassis. According to the structure: the chassis can be divided into at, ATX, microATX, NLT and other types. At present, ATX is the main machine in the market.
机箱的作用便是保护电脑硬件，使之合理分布在机箱内部，选择合适的机箱是很重要的。按尺寸分类：按机箱的尺寸分类 ，机箱可分为超薄、半高、3/4 高和全高机箱。按外形分类：机箱有立式机箱和卧式机箱之分。按结构上分：机箱可分为 AT、ATX、MicroATX、NLT 等类型，目前市场上主要以 ATX 机为主。
The function of the chassis is to protect the computer hardware, so that it can be reasonably distributed in the chassis. It is very important to select the appropriate chassis. Classification by size: according to the size of the chassis, the chassis can be divided into ultra-thin, half high, 3 / 4 high and full high chassis. According to the shape classification: the chassis can be divided into vertical chassis and horizontal chassis. According to the structure: the chassis can be divided into at, ATX, microATX, NLT and other types. At present, ATX is the main machine in the market.
Whole tower box
全塔式机箱相比中塔机箱，其尺寸更加宽大，能够兼容更多的高端硬件，在散热能力、接口配置等方面更出色，特别适合高端游戏玩家、资深 DIY 用户等，建议选择卷边边角的机箱，比片状更能防止割伤，同时还有更强的抗扭曲能力。
Compared with the middle tower chassis, the full tower chassis is wider in size, compatible with more high-end hardware, and better in heat dissipation capacity and interface configuration. It is especially suitable for high-end game players and senior DIY users. It is recommended to choose the chassis with curled edges and corners, which can prevent cuts more than the sheet chassis, and has stronger anti twist ability.
Function advantages and disadvantages: powerful function, spacious space, compatible with more hardware, strong expansibility, excellent heat dissipation ability and interface configuration, providing support for feverish players in space, heat dissipation, function, etc; But it’s big, it’s heavy, it takes up space, and the price is high.
适用人群：适合高端发烧玩家和喜欢折腾的 DIY 玩家
Applicable crowd: suitable for high-end fever players and DIY players who like to toss
Medium tower case
中塔式机箱的尺寸比较标准，一般能提供 4 个硬盘位和 1 个电源位，具有价格合理、表现中规中距的特点，其实用性比较强，适用于常规主流装机用户、入门 DIY 玩家等，建议选购侧板手感厚实沉稳的机箱，能够有效的防止变形和屏蔽电磁波能力。
The size of the middle tower chassis is relatively standard. It can generally provide 4 hard disk bits and 1 power supply bit. It has the characteristics of reasonable price and medium distance. It has strong practicability. It is suitable for conventional mainstream installation users and entry-level DIY players. It is recommended to choose the chassis with thick and stable side plate, which can effectively prevent deformation and shield electromagnetic wave.
功能优劣：可以当成一款小号的全塔机箱，功能全面，体积适中，内部空间宽裕，散热性能也是不错的，没有全塔机箱的缺点，实用性最强，市场最广，价格较为合理；但是 PCIE 插槽数量和整体的外形，都有缩减。
Function advantages and disadvantages: it can be used as a small full tower chassis with comprehensive functions, moderate volume, abundant internal space, good heat dissipation performance, without the shortcomings of full tower chassis, the most practical, the widest market and reasonable price; However, the number of slots and the overall shape of the device have been reduced.
适用人群：还和常规主流装机用户和刚入门的 DIY 玩家
Applicable crowd: also with conventional mainstream installed users and new DIY players
Mini chassis has the characteristics of compact interior, fashionable appearance and small space occupation. It is suitable for users with low configuration requirements, living at home and working. It is recommended to install water cooling or better cooling chassis to avoid damaging the chassis when the heat is high.
功能优劣：mini 机箱体积较中塔机箱更小，移动方便不占地方，同时还支持 ATX 标准大电源和 M-ATX 的紧凑型主板，使得小机箱的易用性和兼容性更强；但是如果追求配置，这种 mini 机箱就无法满足安装需求了。
Function advantages and disadvantages: Mini chassis is smaller than medium tower chassis, which is easy to move and occupies no space. At the same time, it also supports ATX standard large power supply and m-atx compact motherboard, which makes the small chassis easier to use and more compatible; However, if the pursuit of configuration, this mini chassis can not meet the installation requirements.
适用人群：适合居家日用和对配置要求不太高的 DIY 玩家
Suitable crowd: suitable for DIY players who need daily use at home and have low configuration requirements
DIY creative case
Function advantages and disadvantages: DIY creative chassis is divided according to the shape, with unique appearance and great personality, which can be customized according to their own needs, and comparison with heart is the first choice for players who pursue appearance; But the price of this kind of chassis is not cheap, so we should consider all aspects when buying.
适用人群：适合追求外观的用户以及 DIY 大神玩家
Applicable crowd: suitable for users who pursue appearance and DIY players
Function advantages and disadvantages: itx chassis is small in size, high in integration, low in power consumption and easy to carry. It is used to support computers with small space and relatively low cost; But the space hardware performance is very limited, it does not have good expansibility, the heat dissipation performance is general, the whole machine configuration is more expensive, and the cost performance is not high.
Applicable crowd: suitable for office workers and female users
Main uses of different chassis
The computer cases are classified into full tower case, medium tower case and mini (small tower case).
全塔机箱空间较大，可以轻松装下 E-ATX 的主板，容纳 GTX 1080Ti PGF 级别的大型显卡完全没有压力，安装水冷和理线也是十分简单，具有非常大的拓展性，空间大，散热性能通常较强，不过料足了价格自然也不低。
The space of the whole tower chassis is large, and the E-ATX motherboard can be easily installed. The GTX 1080ti PGF level large graphics card has no pressure at all. The installation of water cooling and cable management is also very simple. It has great expansibility, large space, and strong heat dissipation performance. However, the price is not low when the materials are sufficient.
一般是 DIY 爱好者以及追求主机性能的硬件发烧友较为偏爱，空间大还一个好处就是可以随意的改建整个硬件的架构，可以很轻松地增加一些硬件，使用体验非常舒服。
Generally, DIY enthusiasts and hardware enthusiasts who pursue host performance prefer it. Another advantage of large space is that they can rebuild the whole hardware architecture at will. They can easily add some hardware, and the user experience is very comfortable.
中塔式机箱大小仅次于全塔式机箱，也是日常生活中最常见的一种机箱类型。虽然放不下 E-ATX 这种奇葩主板，但空间还是很大，支持 ATX 主板类型。显卡方面也没有太大压力，基本都可以容纳，
The size of medium tower chassis is second only to that of full tower chassis, and it is also the most common type of chassis in daily life. Although the E-ATX motherboard can not be placed, but the space is still large, support ATX motherboard type. There’s not much pressure on the graphics card. It can basically accommodate all of them,
Although the expansibility and heat dissipation can not be compared with the full tower chassis, it is also quite good, and the price is the cheapest type, which is more suitable for ordinary players.
Tower chassis is the most popular type of chassis, very popular, from home to Internet cafes to the office. In addition, the middle tower chassis can also be equipped with water cooling, and many manufacturers also spend a variety of thoughts on it to win the favor of consumers, such as water cooling, side penetration, RGB lamp effect and so on.
mini 机箱也叫小塔式机箱，体积较小，通常支持 M-ATX 主板，放家里或办公室都不占空间。但是因为 mini 机箱体积小，对显卡等硬件尺寸的要求较高，一般只能选择体积偏小的显卡，比如 GTX 1060 X-Gaming OC 及更小的显卡，这就导致选择 mini 机箱的玩家对电脑性能的要求大部分也不是很高。
Mini chassis, also known as small tower chassis, is small in size. It usually supports m-atx motherboard and does not occupy space at home or office. However, due to the small size of mini chassis and the high requirement for the size of hardware such as graphics card, generally only small graphics card can be selected, such as GTX 1060 x-gaming OC and smaller graphics card. As a result, most of the players who choose Mini chassis do not have high requirements for computer performance.
体积小带来另外一个问题就是散热性能不强，现在很多厂商也在通过各种设计解决这个问题，比如加风扇、加散热面，而且由于机箱大小，mini 机箱的拓展性也基本上没有啥了，所以选择 mini 机箱不能单考虑空间和小巧可爱等方面，其他因素也要一并考虑在内。
Another problem brought by small size is that the heat dissipation performance is not strong. Now many manufacturers are also solving this problem through various designs, such as adding fans and cooling surfaces. Moreover, due to the size of the chassis, the expansibility of mini chassis is basically nothing. Therefore, the choice of mini chassis can not only consider the space and small and lovely, but also other factors.
Skills of case selection
Good heat dissipation is a prerequisite for an excellent server chassis. The heat dissipation performance is mainly reflected in three aspects, one is the number and location of fans, the other is the rationality of heat dissipation channels, and the third is the material selection of chassis.
Generally speaking, brand server chassis, such as ultramicro, can do this well. Large diameter fans are used to heat CPU, memory and disk directly, forming a good cooling channel from the front to the rear, forming a good thermal cycle system. The case shell made of high-quality aluminum alloy or steel with strong thermal conductivity can also effectively improve the heat dissipation environment.
The design of redundancy is also worthy of attention. One is the redundancy of the cooling system. This kind of server chassis must be equipped with special redundant fans. When individual fans stop running due to faults, the redundant fans will take over the work immediately.
The second is the redundancy of power supply. When the main power supply fails or the voltage is unstable, the redundant power supply can take over the work and continue to supply power to the system. The third is the redundancy of storage media, which requires the chassis to have more hot swap hard disk bits, so that the server can be easily maintained.
设计精良的服务器机箱会提供方便的 LED 显示灯以供维护者及时了解机器情况，前置 USB 口之类的小设计也会极大的方便使用者。同时，更有机箱提供了前置冗余电源的设计，使得电源维护也更为便利。
The well-designed server chassis will provide convenient LED display light for maintenance personnel to know the machine situation in time, and small designs such as front USB port will also greatly facilitate users. At the same time, the chassis provides the design of pre redundant power supply, which makes the maintenance of power supply more convenient.
用料永远是衡量大厂与小厂产品的最直观的表现方式。以超微机箱为例，同样是 4U 或者塔式机箱，超微的产品从重量上就可以达到杂牌产品的甚至三四倍。在机柜中间线缆密布设备繁多的情况下，机箱的用料直接牵涉到主机屏蔽其他设备电磁干扰的能力。
Material is always the most intuitive way to measure the products of large and small factories. Take the ultramicro chassis as an example, which is also a 4U or tower chassis. The weight of ultramicro products can reach three or four times that of miscellaneous products. In the case of dense cables and various equipment in the middle of the cabinet, the material used in the cabinet is directly related to the host’s ability to shield other equipment from electromagnetic interference.
Because the quality of the server chassis is directly related to the stability of the system, some well-known server motherboard manufacturers will also produce professional server chassis to ensure the stability of the final server products.