1. How much radiation does the host computer emit?
Most people care about choosing an LCD to avoid the big radiation of a CRT monitor, but many users don't notice that the accessories inside the case (the mainframe) are also a source of radiation. Some users in a long time after the use of computers will feel dizziness and other uncomfortable symptoms, in fact, this and the host of the size of the radiation and the use of the correct or not. For example, some users in order to let the host have a better heat dissipation, the two sides of the baffle are removed, so that the chassis shielding radiation function is equal to the loss of.
In fact, a well-built, well-materialized chassis can be used normally (without removing the baffles) to shield the radiation to a safe level. Of course, the chassis can not be completely free of gaps and ventilation holes, a reasonable size of the aperture size is a very important part. According to scientific research tests show that the ideal aperture size of r/30 (r for the wavelength), can both take care of the chassis cooling needs, but also effectively prevent electromagnetic wave radiation.
2. Is your case sturdy?
Whether the chassis is strong or not has a great impact on the stability of the host, especially hard drives, optical drives and other storage devices, imagine if your chassis is in a long time in the state of shaking and how to ensure the safety of it. In general, a good chassis steel thickness should be at least one millimeter above, and the plate should be specially treated galvanized steel. Because galvanized steel has the advantages of anti-static, not easy to rust and not easy to get fingerprints.
There is also a new type of chassis that uses aluminum alloy. Using this material chassis in the same thickness than the steel strength is higher, but the quality will be lighter. Moreover, the aluminum alloy itself has better oxidation resistance than steel plate, so that the aluminum alloy chassis generally do not need to be coated. But such 'chassis are not without disadvantages. First of all, although the hardness of aluminum alloy is better than steel, it is far less flexible. If subjected to heavy pressure, there is a risk of irrecoverable deformation; second, this is also difficult for most ordinary consumers to accept the place - aluminum alloy chassis are very expensive.
These two are the most common types of chassis. But no matter which one, the chassis sturdiness is a very important parameter. Perhaps some readers have said "when buying a chassis is not possible to use precision tools to measure the thickness of the chassis plate ah!". . I would like to introduce a simple method, the general quality of the chassis are heavier, and hard to shake will not have too much swing. I believe that consumers can follow these two points to buy a strong chassis.
3. Transparent chassis to choose to be careful
In order to meet the "beauty" of some consumers, the business launched the use of transparent plastic material chassis. These transparent chassis can be the host accessories unreservedly displayed, coupled with dazzling colorful lights, looks very eye-catching indeed. However, in addition to the beautiful, host as a long time and we "close contact" with the electrical appliances, we have to think more about its safety and solid degree of it.
I believe that the reader has just seen the author mentioned two chassis to buy points, to buy chassis indicators have a certain understanding. The transparent chassis is precisely in these two points of performance is not too good. First, from the material considerations, transparent chassis can not be simple
Simply composed of transparent plastic and glass. And at least should be the use of acrylic sheet material. Nevertheless, the hardness of such a material is not comparable to galvanized steel. Furthermore, to achieve a good electromagnetic shielding effect, these transparent chassis must use leaded materials or vacuum metal coating on the acrylic plate. Unfortunately, due to the cost, most of the transparent chassis on the market do not meet this standard.
Overall, transparent chassis have little to offer except for good looks. So be careful when buying a transparent case.
4. Is your case cool enough?
The overall cooling performance of the chassis is also a consideration for computer users. Today's computer hardware is more and more integrated, the CPU, graphics cards, hard disk, these big heaters are also in the full "show their passion". If the chassis cooling is not enough, it will easily become a veritable "small volcano". Some users have installed a number of high speed cooling fans in their chassis in order to make the chassis internal cooling better.
But can this approach achieve good results? The answer is not necessarily. Readers have the opportunity to pay attention to the situation in the server chassis, you will find that the original server cooling fan is not as much as we thought. The reason for this is that they know how to grasp the chassis duct flow. In general, the average user just follow the front of the lower (if the control air inlet in the hard disk position will be better, just a little more dust) into the wind, the rear of the wind (generally behind the CPU fan) principle is enough.
As for the side baffle (also directly opposite the CPU fan) whether the need to guide the wind cover is a matter of opinion. However, the 38-degree chassis on the market usually adopt such a principle, and I believe that only products that truly meet the 38-degree chassis standard are suitable for using such a practice. If it is a common chassis products also use such practices may be counterproductive.