Do you know how to detect the authenticity of a computer monitor? Here's what I brought you about how to distinguish the authenticity of a computer monitor. Welcome to read!
method of distinguishing the authenticity of a monitor. 1. Eye view: Identify from the hardware itself
1. When purchasing hardware products from the packaging anti-counterfeiting label
, the first thing is to look at the product packaging. Taking Kingston memory as an example, starting from January 1, 25, Kingston products distributed in China will all adopt brand-new "nano-refraction" anti-counterfeiting labels. It is said that this kind of anti-counterfeiting label similar to laser technology has no possibility of counterfeiting. This kind of anti-counterfeiting label will replace the fake label of telephone short messages that have been used for two years. In the future, it can be seen in the eye-catching position in Kingston, and it is not necessary to verify the authenticity by third-party means such as telephone and short messages. For other products, such as motherboards, graphics cards, CD-ROMs, etc., due to the use of outer packaging, there are generally 8 and other free consultation telephones on the boxes, through which you can consult whether the products of manufacturers are genuine. For example, SONY's magneto-optical storage products (CDRW, DVDRW, etc.) sold in China are all licensed with the blue anti-counterfeiting label of China Quality Inspection Association. The label consists of two layers of stickers. The anti-counterfeiting code can be seen on the second layer of stickers when the surface layer of the label is uncovered, but there is no anti-counterfeiting code on the labels of parallel imports and fakes. After purchasing, you should immediately uncover the surface layer and call the toll-free number on the anti-counterfeiting label 881646 to check the authenticity of the purchased products. In addition, SONY's licensed products are affixed with the anti-counterfeiting label of "Sony original Lifu agent". This is an important way to identify licensed goods, parallel imports and fakes (special reminder: counterfeit parallel imports are also labeled with anti-counterfeiting trademarks).
2. Look at the authenticity from the chip itself
Because many JS packages the products too truly, and many users buy bulk products (such as bulk CPU, memory and hard disk), users can't identify themselves through the external packaging, so we should identify them from the quality and technology of the hardware itself. For hardware such as CPU, memory, etc., because its core chip is exposed, it is often the easiest product for JS to polish or fake. We can easily use eye recognition. Take CPU as an example. When many users buy INTEL P4 3.G box products, they pay the money and take the goods, and even carry a spare CPU home.
let's take a look at this P4 3.G boxed CPU. In the label of the product packaging box, the secondary cache is marked as 512K, which is completely correct, but when we open the package and look at the surface of the CPU, the secondary cache is marked as 1M. As everyone knows, P4 3. Looking at quality from PCB layout
For graphics cards, motherboards and other products, because the core is covered by the heat sink, it is impossible to disassemble the heat sink when buying. In addition to identifying from the above methods, it is also an important means to identify the quality of its own PCB layout. For example, a graphics card with the same specification, model and chip is designed with a public PCB, while some fakes use a non-public PCB design because of cost control. ? Non-public board? More often just for? Low cost? Or the product of propaganda needs. For example, due to many people's understanding of PCB, I would like to stay here? So-and-so graphics card uses N-layer PCB? 、? The more layers of PCB, the better? On the level of this, JS has an opportunity? And a graphics card obviously only uses 4 layers of PCB, but JS must say that this graphics card uses 6 layers of PCB.
to identify the quality of PCB, we have to start from the details. For example, by observing the oxidation around blind holes and solder, everyone can know whether the PCB is made of good or bad materials; By observing the transparency of the PCB edge, you can know the approximate thickness of the PCB. Of course, if the merchant can provide a number of different graphics cards in kind, then the identification work will be easier to carry out! For example, the low-pass filter circuit that can't be ignored, the low-pass filter circuit (generally, the low-pass filter circuit is close to the VGA output interface of the graphics card, which is composed of many capacitors and inductors to improve the stability of the display signal and finally obtain high-quality output pictures), few consumers pay attention to it, but many graphics card manufacturers squeeze profits from him.
Method 2: Handholding method: It is also very important to feel in your hands
For products such as graphics cards, motherboards and power supplies, you can also feel with your own hands, that is to say, you can know what is going on by weighing the products. For example, the motherboard or graphics card, the genuine product adopts large board design, and the specifications are very high. For friends who can't identify the component itself, it is impossible to identify the fake product from the appearance, because the fake product is also a large board design, but as long as you compare it, take the fake motherboard in your hand, its weight is very light, while the genuine product is very heavy. This is because the genuine products use good PCB and components with good quality, while the fake products use thinner PCB, and the components on the motherboard are also inferior, even saving some unimportant components, so it is of course much lighter. Generally speaking, the PCB of a good board has smooth edges and corners (it doesn't hurt hands), and the hands feel very comfortable. Holding the board in your hand feels heavy and very textured.
Another example is the power supply. At present, the thickness of the steel plate of the power supply housing is generally .6MM or .8 mm.. Power supply should have a heavy feeling in your hand, especially for some power supplies that have passed safety regulations or certification, some circuit boards and parts will be added to increase their safety and stability, and the weight will of course increase. Moreover, according to the current production method, the larger the power, the thicker and denser the coils and other components inside, so the heavier the weight should be. Although it cannot be arbitrarily said that the heavier the power supply, the better, but the light weight is definitely not good.
method for distinguishing the authenticity of a monitor 3. Tool method: testing the real quality with software
Although the above methods can greatly prevent the purchase of counterfeit goods, these are all theoretical? On paper? If you want to know whether the product you bought is true or whether its performance is as good as that of the merchant, it is clear at a glance to use some professional tools and software to test it (the following hardware products in software testing are for your reference only).
1. Testing the performance of CPU
In the whole PC system accessories, CPU undoubtedly plays the most core role. Many friends don't know enough about CPU, mistakenly think that the higher the main frequency of CPU is, the better the price is, and the higher the performance is. Especially, they don't have deep insight into some polished and counterfeit CPUs, and often they are expensive. Core? When you buy home, it's either because you always crash when playing games, or because the speed of rendering animation is not satisfactory when drawing. Let's unveil the true veil of CPU so that you won't be blind when purchasing CPU.
if it is an INTEL processor, you can use the Processor Frequency ID Utility, a tool developed by INTEL for yourself. It uses a frequency determination algorithm to check the internal data in the processor, compares this data with the detected operating frequency, and finally informs the user of the overall system status as a comparison result. Run the Processor Frequency ID Utility and its main interface will appear. From here, we can see that the CPU is INTEL Celeron IV 1.7G, and the system bus frequency is 4Mhz. And? CPUID data? In, detailed CPU parameters, such as processor characteristics and cache information, are displayed.
2. Test the performance of memory
For ordinary users, they have no ability to identify counterfeit and inferior products in memory, and these memories often lead to the phenomenon that the machine is interrupted during the game and the picture is paused and slow. Therefore, how to test your memory performance and master the memory performance is helpful for us to understand the memory requirements of the game, thus making you invincible in the game competition.
take Samsung DDDR333 memory as an example, run SiSoft Sandra, and select? Mainboard Information? Options and run, you can get memory related information (as shown in figure 22), from which we know that this is a 256MB PC27(DDR333) memory. When the memory works at the external frequency of 133MHz, the default CAS delay time (CL) is 2; When the CL value is 2.5, the standard working frequency of the memory is 167MHz, which is a little higher than the standard 166MHz. If we want to test the stability of the memory when it works, we need to run CPU Benchmark calculation for more than 1 times with the Burn in test item in SISoft Sandra as the standard of memory stability, and all of them are determined to be stable.
3. Test the monitor
For the monitor, if you buy a brand product, there will not be much problem. If you are not at ease, you can use AIDA32 software. Monitor? Yes? Monitor? , the information of the display will be displayed. If you buy enough LCD monitors, affected by the production process, LCD monitors sometimes have bright spots, dark spots or even bad spots. So how can we know if there is a bad spot on the LCD screen? You can make a judgment with DisplayX software. After running the software, you can switch the colors of white, red, green, blue and black from time to time in the state of full screen by selecting the routine single test-solid color. As long as you find that the screen has a fixed point with a constant color, it is a bad point. However, due to the manufacturer's regulations, products with less than 3 bad spots are generally normal products, so this is not to say that there is a problem with product quality. However, if some merchants guarantee that there are no bad points, using this to test can let the merchants change you to a product that really has no bad points.
method for distinguishing the authenticity of the monitor 4. Write it at the end
In fact, in addition to the above methods, more hardware information can be obtained from the motherboard BIOS and boot screen. Of course, when buying in reality, we need to constantly learn from our experience, such as choosing some large-scale merchants to buy, and not going to some unknown small stalls casually. A grocery store? . Secondly, when purchasing, the other party must issue a formal invoice for the product warranty, and write down the product warranty clearly so that we can make complaints in the future. In fact, there are many ways to prevent the purchase of counterfeit goods. The above author only provides some reference ideas, which does not mean all methods and hands.
The easiest way is to call the anti-counterfeiting phone on the box.
For CPU, it is best not to buy it in bulk. Go to official website to check it out and teach you how to prevent counterfeit CPU. And look at the pictures.
The motherboard should pay attention to whether the screws on the board are crossed. (Anti-second-hand)
Hard disk is not something that ordinary companies can do because the technical requirements for making hard disks are very high. Therefore, there are no fakes.
See if the gold fingers are crossed in the memory. Look at the memory particles. If they are too smooth, they are fake. (It's best to call)
There is no such thing as a fake video card. Just look at the gold finger and it means it's second-hand. If you look at other small pieces carefully, don't say much. Call 8 directly.
It is recommended to find a big store to match it, because that proves that his economic power is stronger. The store moved soon after it was made. It's a long time to see it.
In addition, I want to remind you that the hardware he gave you should match the right number. Don't mistake a letter. Then, pay attention to whether the hard disk interface is IDE or SATA.
It's not the same concept as fake cigarettes, but a fake one, for example, one letter in a string is different and so on. Or the configuration list given to you is the same, and it will be another brand when it is delivered to you. Of course, the price is poor. Because the accessories are all in the chassis, many people will not pay attention, so they are fooled. This is the legendary JS practice. Be sure to check in detail according to the brand, model and other data listed in the configuration list. It's better to find a knowledgeable friend to go with. Cheap or expensive things are another matter, so don't be fooled by JS. Buy defective products.
hardware has 8 anti-counterfeiting phones!
Hard disks, floppy drives, CD-ROMs, motherboards, graphics cards, sound cards and other spare parts should all have complete packaging bags (that is, a layer of antistatic plastic cover, which is very strong), and now they all require factory certificates. The most important date of manufacture is CCC certification, and those without this must not be required; In addition, most of them have laser anti-counterfeiting and free telephone confirmation.
People who read the article "How to distinguish the authenticity of a computer monitor" also read:
1. How to look at the model of a computer monitor
2. How to look at the model of a computer monitor
3. How to distinguish the quality of a computer monitor
4. How to distinguish the quality of a computer monitor
5. How to check the model of computer monitor
6. What to look at when buying computer monitor in 216
7. How to look at the quality of computer monitor
8. How to choose computer monitor
9. How to look at the size of computer monitor
1. Matters needing attention when buying computer monitor.