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From the birth of the computer this product, the chassis is inseparable from the computer, the chassis is an indispensable skeleton of the computer, it is responsible for protecting the internal hardware of the chassis from external damage, but also represents the development of the computer's appearance. For a long period of time, the chassis has been silently existed as a necessary but unimportant role. The "chassis + power budget 300 yuan" is due to the familiar concept of the old generation DIYer. However, with the development of the times, the hardware performance index is no longer the only goal pursued. The rise of individualized requirements has caused a large number of well-designed chassis products to get attention, so here we would like to talk about this big iron shell purchase.
The development of the chassis shape is closely related to the replacement of the motherboard specifications. Because of the limitations of the structure of the early AT series motherboards, most computer chassis use horizontal appearance. So for the friends who had access to computers in the early 1990s, the computers that have left memories so far are often like this.
Around 2000, the trend of DIY hosts became more and more popular, which promoted the development of the chassis. However, the size of the chassis and the internal structure of the chassis are basically similar. Steel chassis are used. The only difference is the style of the plastic front panel. Some products are equipped with hand-tightened screws, and most of them do not even have a basic cut-proof cutting edge. On behalf of the product is the Patriot's Moonlight box series, with a 300W power supply, the price of 300 yuan, many players are starting the path to fever.
What really played an enlightening role was XaserII (thermaltake). This chassis product launched in 2002 first introduced a transparent side panel design, solid materials and exquisite workmanship. For the first time, DIYer knew that the chassis could also be beautiful. Just the price is also prohibitive, out of the box around 1500 yuan price at that time most players can only look up.
2002-2005 was a passionate era. With the launch of the AMD AthlonXP 1700+ and the unprecedented Barton 2500+, PC DIY went through a glorious era. Overclocking is the coolest gameplay of the era. Due to the limitations of the manufacturing process, the CPU and graphics cards at that time had considerable heat dissipation requirements. When the heat pipe-based high-end heat sink had not yet been molded and the overall air duct structure had not appeared, Space has become the most important indicator of the chassis. So the high-end chassis was mostly bulky and wild at the time.
My fever journey began with WeiXin 6920. This nicknamed Pilot Whale's chassis is used for small servers. The material used is quite thick. The weight of a single sided side plate of 1.2mm thick SECC galvanized steel may exceed the weight of many small aluminum. Chassis. Before and after two 12CM fan chassis fan is also considered a good configuration at that time, with the TT Volcano 10 radiator can finally be assured to boldly "Barton small U"
The Chery CK-1018 can be described as the most representative chassis of this era. It has a large volume and solid materials and is configured in accordance with the needs of small servers. Although the hinge of the front panel sliding door is extremely fragile, it still can not stop the enthusiasm of DIYer purchase.
The internal structure of this chassis now does not appear obsolete. The installation of the free screws and the modular design of the hard disk cage are all available. The large internal space provides plenty of mounting space for the hardware. The chassis even reserves the end-reinforced card slots for professional graphics cards.
This chassis uses up to seven 8cm fans as the system cooling, in order to suppress the noise requires two sets of governors are enough, this is unimaginable later, but in that wild era this is the representative of justice
4. Functional eraWhen AMD temporarily died down and Intel Core finally controlled its power consumption to a relatively reasonable range, DIY entered a relatively quiet period. I remember that when an E8400 CPU took the mainstream for a long time, many players were able to move from simple performance to relative personalities. Most high-end chassis in this era's chassis haven't yet gotten rid of the bulky features, but more practical designs such as power down, hardware partition installation, and backplane alignment have become popular.
When the hardware performance increases beyond the requirements of the software, the pure performance index is not the only pursuit of the PC, and the appearance of refined and personalized demands is gradually reflected. Today's computer chassis is no longer as silly, big, black, and thick as it used to be, and manufacturers are paying more attention to dazzling appearance and sophisticated internal design.
Lian Li is the first batch of manufacturers involved in the production of aluminum chassis is very rich in product types, covering the size of the motherboard from the Thin-ITX to HPTX almost all available on the market. Although starting with aluminum boxes, there are also relatively cost-effective K series steel chassis products.
Lianli chassis has the advantage of excellent workmanship, regardless of the accuracy of the hole or edge processing has a high level of technology, there is a long time joint force is the domestic players can buy the most sophisticated high-end chassis. Most of the DIY installations using the joint force chassis can be installed with a sense of “snap tightnessâ€.
The company has been a leader in design and has launched such eye-catching creative designs as Nautilus, Sailing Hotel and Mechanical Spider.
However, with the gradual cooling of the DIY installed market in these years, the appearance of the product finally failed to escape the “black box of the boxy†style. It was like a middle-aged man who had lost his ideals and passion, and his design gradually changed from a leader to a leader. Followers. Of course, this may be changing with the release of the latest "O" series.
Continental brand, established in 2010, entered the market early on with HTPC horizontal chassis products and accumulated a certain reputation. Afterwards, with the trend of miniaturization of the mainframe, the mini-enclosures for Mini-ITX-compatible motherboards have expanded the product line, and they have become a follower of the company. A large number of products can see the shadow of Lian Li.
In fairness, as a local brand that entered the market later, Qiao Sibo’s overall performance is remarkable, especially in performance-price ratio. Although overall workmanship and materials are not the best, they are worth the price. The initial product has a shadow of joint force, but it is not exactly a copy of it, and it can be optimized in many cases, such as increasing the hard disk position and fan position. Moreover, due to the joint efforts of the recent years of no progress, forcing Qiao Sibo to start designing himself, he is also considered to have a certain style.
As a veteran enterprise in the traditional chassis, it is mainly made of steel box products. In 2008, the crow series chassis (and part of the FT series) with vertical air ducts were released to pay attention to users with efficient heat dissipation performance. RV01, RV02 and FT02 are representative products of DIYer in the year.
However, with the improvement of the hardware process, the heat of ordinary home computers has been well controlled, and the demand for heat dissipation is no longer urgent. The vertical air duct chassis gradually fades out of the user's field of view because of its relatively large volume. With the gradual decline in the sales volume of the RV series' late products, the market share and popularity of Yinxin's chassis have also deteriorated. Only a few low-end products are on sale.
4, Antec (Antec)Antec has been a big manufacturer with a large brain cavity. Its products are mainly muted. Antec takes the manufacturing process of the steel chassis to the extreme. The P180 and P183 series have become the dream chassis of many DIYers with excellent internal structure design and cost-free materials.
However, with the gradual cooling of the DIY market, Antec also basically gave up the research and development of high-end chassis products. Currently, most of the mainstream products for sale are targeted at cost-effectiveness, focusing on the price of 200-500 yuan.
5. Welcome to InWinNew high-end chassis manufacturers, products have a very high quality. The characteristic is not seeking large, only for the United States. Good at using the unconstrained lines and arcs to outline a stunning chassis shape. Also like to use the full tempered glass side panels with a simple and cold appearance to create the visual effects of high-end atmosphere.
In the middle tower and full tower chassis products welcome to have a wide range of classic products.
6. Herd (PHANTEKS)
The chasing winder is a rising star in the chassis industry. There are many opinions about the birth of the factory. The current credible argument is that the design team was established in the Netherlands in 2007 and the chassis production was contracted by the domestic manufacturer Xing Yuquan. But regardless of origin, the design and quality of the chasers are commendable.
The chasing winder's chassis design is very novel, eye-catching but not too exaggerated, full of sense of science and technology. The chassis material is mostly made of steel frame + aluminum alloy panel and tempered glass side panel, so that the stability, appearance and cost are perfectly balanced.
Japanese manufacturers can be seen as an enhanced version of the joint force. The production process can be described as meticulous, and the production of the craftsmanship is entirely in the production of chassis. The quality of ABEE in the mass production chassis products is unmatched, and of course the same price is unmatched. . .
Below 500 yuan price:
Most of the products in this price range are made of steel cabinets with plastic decorative accessories, with more traditional horizontal air ducts and medium-sized full-tower cabinets. For the price of the product, more needs to be considered is the cost-effective and relatively reasonable structure. Although this price is an entry level, it does not mean that the low-end and poor quality, there are still many products worth recommending.
1. Engen (NZXT) H2Plus
This product is a newer product of NZXT H2 chassis. The box is based on ATX full tower volume and is made of 0.8mm thick SPCC steel plate, which is thick and stable. Can expand 3 5.25 inches, 6 3.5/2.5 inches HDD/SSD hard disks, at the same time 2.5 inches of hard disk storehouses adopt the modular design and can be dismantled by users by oneself, make room for the high-end graphics card. The 2.5-inch and 3.5-inch driver mounting positions on the chassis and the two-sided versions are screw-free for easy maintenance and replacement of parts. The presence of trace openings in the mounting holes of the motherboard allows the “backplane traces†to be achieved to some extent. 
The design of the box continues the previous design of a simple and tough design, retaining the front aluminum panel sliding door, base and hidden inlet details. To minimize noise reduction, the side baffle and front are equipped with sound-absorbing cotton and the top is enclosed. Chassis fans use a "2 in 1 out" design to create a positive pressure differential effect, which reduces dust entry to some extent.
This chassis has black and white two colors, the white color matching visual effects are particularly dazzling. If you need a balance of quality, functionality, price, and an all-in-one, all-in-one chassis, the NZXT H2 Plus is a product worth considering.
Recommended starting price: 300 yuan or less Historical low price: 279 yuan
2. Antec P280
The P280 exterior design retains the simple and elegant concept of the Antec P series, and has undergone drastic changes in size and internal structure. The width and depth of the cabinet have been greatly enhanced to accommodate more and more exaggerated graphics and CPU heat sink size. The installation direction of the internal hard disk was changed from the original horizontal insertion to lateral insertion, which greatly improved the hindrance of replacing the hard disk after the original graphics card was installed, but it was regrettable to cancel the design of the modular hard disk cage.
As the successor to the classic model P183, the P280 retains the excellent manufacturing process and design details of the double-layer side panels of the Antec Steel Box, but it does not insist on the design philosophy of silent supremacy. Larger internal space and more fan positions allow the P280 to comfortably handle increasing hardware cooling requirements. The easy-to-clean dust-screen design and the three-stage fan speed controller allow users to use and maintain them more easily in the future.
Recommended starting price: 370 yuan or less Historical low price: 349 yuan
3, Jonsbo (JONSBO) U4
U4 is not a pure aluminum chassis, the internal frame is stamped with SECC galvanized steel sheet, ensuring sufficient structural strength. It completely abandons the traditional external 5.25-inch driver hole position, the front fan also uses the right vent air inlet, so the overall appearance is very simple. With the aluminum integral panel and the right all-tempered glass bezel, the visual appearance is superior.
The U4's internal space is moderate in size, and it can meet the hardware requirements of moderate fever. The only hard drive with less cooling efficiency is not very high, so it is more suitable for pure SSD configuration system installed.
If you like the aluminum chassis and don't want to spend too much, U4 is a good choice at this price point.
Recommended starting price: less than 300 yuan Historical low price: 260 yuan
In the current trend of reduced drive utilization and storage shifts to SSDs, it is a relatively popular practice to abandon the traditional 5.25-inch and 3.5-inch drive cages on the front of the chassis in exchange for a simple design and larger internal space. If the price does not deliberately pursue the aluminum housing at this price, the following public steel chassis are the recommended choices. They have a similar hardware structure, work materials are generally equivalent, there are differences in the appearance and size and details, the approximate parameters and reference prices are compared with the following table:
Chassis (PHANTEKS) 416 tower type side through chassis Recommended starting price: 300 yuan or less Historical low price: 249 yuan
NZXT (Enge) S340 Tower side through the chassis Recommended starting price: less than 300 yuan Historical low: 229 yuan
SilverStone KL07B Chassis Recommended starting price: less than 350 yuan
Antec P110 Tower Chassis Recommended Price: 450 yuan
The chassis at this price is mostly high-end products, with a more reasonable structure and excellent workmanship. This price is a must-see for major manufacturers, so the model is very rich, there are many optional products, so it is recommended to choose 3 distinctive products.
1. LIANLI PC-Q33
This is a mini tower chassis, all aluminum alloy material coupled with the excellent force of work, so that it regardless of appearance and internal structure are pleasing to the eye. With the upper and lower layered structure, the power supply is separately placed in the lower layer. The chassis clamshell type open mode and the horizontal mounting of the mainboard make this case exceptionally convenient for hardware security and cable management. The PC-Q33 is the best-equipped ITX mini tower chassis I have ever installed. It does not have the sense of urgency to crowd the small chassis.
The largest two 3.5-inch HDD+2 2.5-inch SSD drive installation space is in the upper level of the volume of the chassis. The 180mm CPU heatsink limiter can easily accommodate a side-blow type radiator with a 12CM fan, and the rear 12CM chassis fan can efficiently heat. Because the chassis fan is very close to the CPU heatsink, I3 or even I5 can only install large heatsinks that rely on the chassis fan to dissipate heat, further improving the quiet performance.
The biggest shortcoming of the PC-Q33 is its short depth and maximum graphics card length of 220mm, so only short-board graphics cards can be installed. However, it is a good choice for self-organizing medium-performance small hosts, HTPCs or even DIY NAS.
LIANLI PC-Q33 Recommended starting price: 500 yuan
2. SilverStone RV02B
The positive pressure differential vertical duct design chassis has excellent heat dissipation and dust protection capabilities. As the main implementer of vertical air duct chassis, Yinxin has launched several classic models. Due to the constant progress in the manufacturing process of core components such as CPUs and GPUs, the demand for heat dissipation of general users is not as pressing as ever, but it still holds great value for users who want to use high-performance CPUs, graphics cards, and dual-graphics SLIs. .
RV02 is the second product of the Yinxin Raven series. Although it was launched earlier, it is still in production. The main reason for recommending it is that it has a good internal space and compatibility, and there is no shrinkage like subsequent products because of control costs.
The RV02 is rough and domineering, and the box body is made of SECC steel plate. The interior has a typical vertical air duct design. At present, after the sale of the product has undergone a minor upgrade and upgrade, the original normal intake fan has been upgraded to a better-performing armor-piercing fan, which has improved overall performance.
RV02 is suitable for users who focus on thermal performance and practical design
SilverStone RV02B Recommended starting price: 800 yuan
3, Phanteks Evolv Shift X PK-217E
Phanteks belong to a relatively niche brand, and their entry time is not long, but the unique shape design attracts people's attention. The appearance of Evolv Shift X completely breaks the traditional concept of the user's computer chassis, and the slim tall tower design is extremely technological.
Evolv Shift X uses a combination of steel frame, aluminum alloy panels, and all-tempered glass side panels for a solid quality. Structural design is biased towards efficient space utilization and functional innovation, making the chassis compact but powerful. Each structure has been meticulously designed to make it beautiful, clean and convenient, and it can meet all-in-one water-cooled and ultra-long format graphics cards.
The chassis is characterized by small and exquisite appearance, and can be placed in various styles to suit different use places.
If you are unconventional, you need an eye-catching chassis. Evolv Shift X PK-217E should suit your taste.
Evolv Shift X PK-217E is a new product, the price is relatively strong at present, most of the 899 yuan, I do not know whether 11.11 will have preferential activities, interested friends will pay attention
4. Welcome to IN WIN 303
The three chassis recommended before this price are all distinct features. Relatively personalized products do not necessarily meet the needs of general consumers in terms of overall performance. If you need a more balanced, balanced and versatile mid-to-high-end chassis The IN WIN 303 is a good choice.
IN WIN 303 emphasizes the integrity of functions, structures, and forms in its design, and pursues the depth and accuracy of materials, techniques, and spatial representation. In the backlight is also more concerned about the front of the decorative backlight design features added, the use of high-quality backlight to make the light more uniform, better luminous effect. Quick-dismountable program baffle, simple and easy-to-operate side panel key design can make users' DIY process more time-saving and convenient.
IN WIN 303 also has a rich internal extension that supports MINI itx/MATX/ATX and even EATX motherboards. The interior air duct design of the chassis adopts a direct-injection air duct design, which can quickly reduce the temperature and avoid heat backflow. Honeycomb vents are designed for better ventilation and heat dissipation. In addition, the base has also undergone special treatment, using hollow base ventilation design, as well as a convenient filter washable design.
Recommended starting price: 600 yuan
5, Phanteks 515ETG
Balanced design, smoothness does not mean that the appearance of the mediocrity, if you like gorgeous visual effects chase wind 515ETG, is worth considering the price of the product. 515ETG is an upgraded model of the old 515E. The biggest change is the upgrade of the original acrylic material side panels to 4mm thick tempered glass side panels, further improving the permeability and wear resistance.
The new version of the 515ETG also adds RGB light tones, with a choice of ten-color toggles and breathing effects.
Of course, it should be noted that although the all-glass double-sided panel used in the 515ETG has improved visual effects, it also fully displays the internal structure of the chassis. Therefore, there is no small challenge to the internal cabling planning of the chassis. It is recommended to use a combination of modular power supply and custom wire to solve the problem of cable hardness, length and color matching.
Recommended starting price: 999 yuan Historical low: 930 yuan
1. LIANLI PC-V700
Law-abiding, stable and stable are the characteristics of most of Lianli's products, and the V-Series is a typical representative of this feature.
The V700's appearance is a bit short and it belongs to the mid-tower chassis, which makes many people mistakenly believe that it only supports the Micro ATX motherboard. But in fact the V700 relies on positioning the power supply at the front of the chassis, effectively reducing the overall height of the chassis, so he not only supports standard ATX motherboards, but also has a very spacious internal idle. In particular, the graphics card installation space is reserved. By adjusting the modular 2.5-inch drive cage, the maximum depth of 440 mm can be obtained. For common high-end graphics cards, the installation can be well supported.
The quality of V700 is consistent with the characteristics of Lianli High-end products. The materials used for workmanship are of a high standard and are suitable for purchase as high-end desktop chassis.
2. IN WIN 904Plus
Compared to Lianhe's mature, sophisticated, V-series, the Yingguang 900 Series is even more blood-thirsty and gorgeous. The 904 Plus is a representative product. However, from the use of materials, the thickness of the 2mm aluminum inner structure plus 4mm thickness of the one-piece external panel frame is enough to let one vote old aluminum box manufacturers dwarf. The overall brushed aluminum panel is accompanied by black tempered glass to create the ultimate high-end visual effect.
If you want to prick, the biggest shortcoming of this product is that the net height reserved for the CPU heatsink is only 140mm. It can only install 9CM fan-type side-blown heatsink, but under the continuous improvement of process technology, CPU The cooling requirements are not particularly urgent, and this chassis is better with an integrated water-cooled radiator
If you are pursuing the ultimate minimalist luxury appearance, welcome 904Plus will be a good choice.
Recommended starting price: 1000 yuan Historical low: 900 yuan
3, NCASE M1
NCASE M1 is a small ITX chassis designed and crowdfunded by two enthusiasts of the HardForum Forum. The interior design of the chassis is compact and the appearance is simple and atmospheric, so there is a high degree of attention at the beginning of the release. Since Lianli is responsible for OEM production, the quality of workmanship is also quite high.
NCASE M1's internal structure design is the biggest selling point, with multiple modules for adjustment, allowing users to more freely stacking combinations. Meet the needs of high-end players to assemble a high-performance "small steel gun."
For mainland users, the biggest obstacle to NCASE M1 is that it is relatively troublesome to buy, because there is no domestic agent because of the adoption of the website direct sales model. Players in need can order on their official website and support direct mail on the mainland.
Above 2000 yuan price:At this price point, cost-effectiveness has become a cloud, and performance and quality have become the ultimate pursuit. Super extensibility and outstanding craftsmanship are the two extremes pursued.
1. LIANLI PC-A79
The PC-A79 is the presence of dinosaurs in the sales of chassis products. The design is as simple as ever. Its characteristic is its powerful expansion ability. There are 12 5.25-inch driver mounting positions on the front, and the back baffle has up to 11 PCI expansion slots, which fully meet the installation requirements of the HPTX motherboard + 4-way SLI graphics card.
The structural design of PC-A79 reflects the highest level of joint force:
The pull-out board bracket is a feature of a large-scale high-end chassis and is very convenient for the installation and daily maintenance of large-scale complex hardware systems.
Up to three sets of 2.5-inch drive modules with hot-swappable capabilities provide plenty of drive mounting space.
The heat dissipation of the system depends on the internal 8 groups of 12CM fans, which is simple and crude.
If you are an enthusiast player, especially if you want to use the HPTX motherboard + 4 graphics SLI extreme configuration, the Lianli PC-A79 may be one of your few options
2. LIANLI PC-O9
The PC-O9 uses a wide-body chassis, and the chassis is divided into two chambers by using a motherboard-mounted partition. The left side installs the card accessories, and the right side installs the power supply and hard disk drive. Although this increases the width of the chassis, it can significantly reduce the overall height. The height of the mid-tower chassis provides the highest E-ATX motherboard and more than 400 mm graphics card installation. space
The left and right chamber dividers completely isolate the board from the driver and power supply, which also improves the cooling conditions of the hardware to some extent.
The biggest feature of the PC-O9 is its visual appearance. The side panels carrying the cards on the left side are all made of tempered glass. With the colorful adjustable LED kits, they have finally changed the shape of the Lianli rigid panel.
For chassis purchase, besides caring about the brand and the specific model, the related indicator parameters are also the aspects that need to be combined with individual needs. Here I have summarized some of the more key indicators and explained the value of mutual value.
1, appearanceAccording to the most widely used Intel ATX specification, the ATX specification mainly introduces a new specification for the structure of the main board. At the same time, the size of the main board is also unified. Common ATX specifications are as follows:
In order to comply with this specification, the computer chassis has also been updated synchronously, so most of the chassis products currently available on the market can be used as ATX chassis. Compared to the early AT series specifications, the biggest feature of ATX is the universal use of a vertical structure, so this type of chassis is also known as the “Tower caseâ€.
ATX's full name in English is Advanced Technology eXtended, a specification structure of PCs that Intel dominated in 1995. Compared to the old AT architecture, ATX made a considerable change to the layout of the chassis, unified the I/O interface to the wide side (30.5cm), and made the form of a "backplane"; the provisions of the CPU heatsink The hot air must have the ability to drain outwards; the horizontal structure that was commonly used in the chassis was changed to a vertical structure. The heat dissipation performance is enhanced while optimizing the internal structure.
Corresponding to the size of common motherboards in the ATX specification, the tower chassis can be classified into three categories: full tower, mid tower, and mini tower. At the later stage, in order to satisfy some enthusiasts to make server-grade EE-ATX motherboards as a DIY option, and an enhanced HPTX version such as those from EVGA manufacturers, many chassis manufacturers have extended the entire tower chassis to create a widening. The larger High Tower giant chassis.
The dimensions of the tower chassis are not clearly defined at the moment, and all are free to be played by the manufacturer. Therefore, the boundary of the adjacent category is relatively blurred. However, you can usually judge by the number of PCI slot baffles.
In general, a chassis with two or more PCI slot baffles is a Mini Tower compatible with the Mini-ITX version.
The four PCI slotted bezels are compatible with Micro-ATX motherboards, and the seven PCI slotted bezels are compatible with Micro-ATX motherboards.
The HPTX fever motherboards, for example, require at least 10 PCI slot baffles to support four SLI system requirements.
The general situation is as follows:
Although the external size specifications are not clear, there are clear specifications for the screw holes on the motherboard's internal motherboard, so in general, large-size chassis are generally compatible with small-size motherboards.
As mentioned earlier, the ATX specification does not clearly define the size of the chassis. However, the actual use of the three-dimensional dimensions of the chassis has some restrictions on the installation of internal hardware. Therefore, at the beginning of the purchase, it is necessary to specify the approximate demand.
In the case of chassis product specifications, the following expression is often used for the dimensions: "(W)210mm x (H) 476mm x (D) 500mm" where W, H, and D correspond as follows:
Height (H): Mainly affects the number of drives installed
Except for the limitation of ATX form factor, the larger chassis height tends to mean more drive mounting positions, that is, 2.5-inch hard disk drive and 3.5-inch optical drive drive. To a certain extent, the lifting height can also increase the number of cooling fan installations and increase the internal volume to enhance heat dissipation.
Width (W): mainly affects the installation space of the CPU heat sink
The CPU heatsink that was designed with the lower blower structure was not required for the width of the chassis. However, with the popularity of heat sinks designed for side blowing, the need for chassis widths has become apparent. At present, the height of a common side-blow radiator is generally related to the specifications of the fan. The general situation is as follows:
At present, most of the radiators equipped with 12CM fan-side air blowers have a height of more than 160 mm, so many of the tower chassis with a total width of only 180 mm cannot be installed. For users who want to use a large-volume heat sink, 200mm or more is the width of the chassis that must be considered.
Depth (D): Mainly affects the installation space of the graphics card
For the graphics card, similar to the case of the CPU, in order to cope with the heat dissipation requirements brought about by the performance enhancement, the size of the heat sink is also expanding, resulting in the continuous increase in the length of the graphics card. The current public version of the GTX1070/1080 is 270mm long, and many non-public version 3 fan designs can easily exceed 300mm in length. Adding power cables to external power cables can often prevent the installation of an undersized chassis. Therefore, for users with this requirement, please try to consider the chassis where the graphics card is installed with a limit of more than 300mm.
Divided by material, common types of chassis are mainly steel chassis and aluminum chassis. The steel chassis is mainly made of galvanized steel. The aluminum chassis is mainly made of aluminum alloy. The specific features are as follows:
Galvanized steel
Galvanized steel is a traditional material used to make chassis, and it has been used since the beginning of the computer. Currently used galvanized steel sheet is mainly SPCC and SECC
SPCC (cold rolled steel): commonly used in low-end steel chassis
The products have good structural strength; corrosion resistance is normal, and a certain degree of corrosion occurs when used in a relatively high humidity environment for a long time; the surface of the steel plate is relatively rough, and it is often spray coated when a large-area housing part such as a side plate is manufactured.
SECC (electrolytic galvanized sheet): Commonly used in high-end steel chassis and server chassis
SECC is an upgraded product of SPCC. Its surface is plated with a zinc layer and its corrosion resistance is better than that of SPCC. The surface of the SECC is smooth and gray, so it is not beautiful. Therefore, the interior of the chassis using the SECC material is generally not painted.
Advantages: The steel chassis has the best structural strength and can withstand relatively harsh environments. The thick side panels can better reduce the resonance noise, which is especially important when installing multiple mechanical hard disks.
Disadvantages: The production process is complex and requires a large number of stamping processes and hemming processes. The dependence on the die is great. Because the cost of mold-opening occupies a large proportion of the overall production cost, once a fixed mold must be mass-produced in order to share the cost, it is not so flexible for the later-stage structural optimization and improvement. Therefore, there are fewer product lines in the high-end steel chassis and the internal structure is relatively single.
Aluminum alloy
Aluminum alloy material Aluminum alloy chassis is an emerging chassis material in recent years. Under the same thickness, aluminum alloy has higher strength than steel, so the chassis made of aluminum alloy is lighter and stronger than steel chassis.
Aluminum alloys are easier to machine than galvanized steel plates, and most parts can be obtained by simple cutting and grinding. Therefore, for the small-volume production of fast-selling DIY chassis has a great advantage, you can flexibly adjust the internal structure to make up for the lack of original design. For some high-end players who own the equipment, they can even customize it.
Aluminium alloys can be manufactured with virtually all components, including the front panel, to form a true all-metal chassis, which increases durability and visual aesthetics.
Aluminum alloy material can automatically generate a dense oxide layer to prevent further oxidation of the overall material, oxide layer dense and transparent name, a small area of ​​the surface will not affect the appearance, so the edge of the aluminum chassis can be polished directly to prevent cutting hands, without the need for plating A large number of complex hemming processes are used in zinc steel plates.
The surface treatment of aluminum alloy is more convenient, and it can be used directly after anodizing, eliminating the need for a painting process and avoiding the common phenomenon of paint peeling on the surface of the steel chassis. With the electrolytic dyeing process, the surface oxide film is directly dyed, so that a variety of color coating effects can be obtained, and it is very wear-resistant and corrosion-resistant.
However, aluminum alloys are also not perfect. The biggest drawback is that their toughness is not as good as that of galvanized steel. If they are under severe pressure, irreversible deformation will occur. And because the texture is softer and more delicate, it's hard to eliminate the scratches when it's inadvertently installed and used daily.
Although the weight reduction is easy to install and carry, it is more likely to generate resonance noise when using multiple high-speed mechanical hard disks. Therefore, the pure aluminum alloy chassis is now considered.
The relatively expensive price is also one of the obstacles that it is difficult to fully popularize.
The aluminum alloy material theoretically has better heat dissipation than the steel plate, but due to the fact that most of the heat-generating components of the host computer and the cabinet do not have direct close contact, the actual impact is not obvious. Therefore, "aluminum box cooling better than the steel box" is more one-sided, better cooling or need a reasonable air duct design to achieve.
4, duct mode
From the standpoint of hardware cooling, the chassis is actually a "negative optimization" function. Therefore, in order to expel the heat accumulated inside as quickly as possible, most of the chassis are equipped with cooling holes and a large number of chassis fans. In early PCs, because of low power consumption, only a chassis fan at the rear of the chassis was used to extract the heat accumulated near the CPU heat sink. As hardware performance continues to increase, the need for heat dissipation increases, and the number of chassis fans increases. The interference and interaction of air flows between the fans introduces a new concept: “Chassis ductsâ€.
The so-called chassis air duct is the passageway where the air flows in the computer case, where the cold air enters and where the hot air comes from, thus forming a flow path of the wind.
At present, there are two types of chassis air ducts:
Horizontal air duct
The horizontal air duct is the initial form of the ATX chassis specification and is currently the most commonly used chassis air duct model. Most of the horizontal air duct chassis now belong to the optimized power supply lower-level design, which allows the power supply part to have a relatively independent cooling air duct, reducing the impact on other hardware devices, and the rough air circulation and heat distribution diagrams are as follows:
advantage:
1, for all types of hardware products, the highest degree of installation compatibility, general user installation and use are the most smoothly
2, pay more attention to the wind design, especially with the heat sink upright side-blown CPU heat sink can be more efficient heat.
Disadvantages:
1, due to the principle of hot air rise, in theory, the upper chassis temperature is higher than the lower part, and most of the heat components are concentrated in the upper part.
2. Because the driver frame is blocked, the air inlet channel is not smooth, and it is difficult to form a direct blowing airflow to the heating hardware.
Vertical duct
The vertical air duct chassis rotates the mainboard by 90 degrees. It adopts the air inlet mode of the lower air inlet and the top heat exhaust. It is the air duct mode with the highest heat dissipation efficiency. There is no unified structure model, and the internal structure of the chassis is defined by the manufacturer.ç›®å‰ä»¥é“¶æ¬£RV系列（Ravenã€ä¹Œé¸¦ï¼‰å†…部结构最为典型，大致风é“æµé€šå’Œçƒé‡åˆ†å¸ƒå›¾å¦‚下：
advantage:
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