PC profiteers are very cunning! Uncover the secrets of Taobao's 8GHz computers
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In recent years, DIY computer assembly has gradually declined, but because of this, "swindlers" follow the principle of "slaughtering" one by one, and the chaos of computer assembly has become more and more serious. Therefore, on the occasion of the March 15 Consumer Rights Protection Day, the author has summarized some tricks commonly used by DIY computer assembly profiteers for everyone, so that everyone can be aware of the situation when assembling a computer and avoid being deceived. False propaganda of whole machines by e-commerce Nowadays, Internet shopping is so developed that many friends will choose to buy whole machines online, which not only saves time, but also the price is much lower than assembling a computer by themselves. However, online shopping platforms are mixed, and the quality is uneven. Some whole machine e-commerce companies use second-hand CPUs, counterfeit motherboards, memory, hard drives, power supplies and other hardware for profit, which is difficult for ordinary consumers to distinguish. Below, the author will reveal the common tricks of e-commerce computer assembly and some easily confused concepts. Please see the configuration list below: "300,000" running score configuration table As we all know, the advantage of APU lies in the powerful integrated graphics performance, but the APU with GTX 1060 is incredible. Not to mention the waste of performance of APU plus independent graphics card, this is still a typical low-U high-graphics, less than 400 yuan CPU with 1600 yuan graphics card, a small horse pulling a big cart, totally unnecessary. Let's take a look at the so-called Lu Master running score of 300,000 points. The high APU running score is because of the powerful heterogeneous computing. Lu Master supports heterogeneous computing, but most software does not support heterogeneous computing. Simply running a high score is meaningless. Fortunately, Lu Master has modified the APU running score mechanism in the latest version, and merchants will no longer be able to make a fuss about the running score in the future. Let's take a look at the evaluation of this host. Netizens commented on this friend, saying that Master Lu could detect a 120GB SSD as 240GB, but the memory could not be detected. The GTX 1060 played "League of Legends" with a minimum FPS of 16. I don't know which hardware of this DIY host is real except the CPU and chassis. Please note that this is still one of the top 60 hosts in Tmall Mall , which shows that many people have been deceived. "8GHz main frequency" CPU host The main frequency of Intel E5405 is only 2GHz, but it becomes 8GHz here. Is it 2GHz for each core, adding up to 8GHz? Does that mean the main frequency of i7 6700 is 16GHz? Let's look at other configurations of the "8GHz" main frequency host. It is an Intel military-grade gold motherboard. I wonder when Intel also produces motherboards? And this memory is called a brand 4GB memory, and it is unknown what brand it is. The power supply is also an unknown brand 400W. I wonder how long such a host can last. "GTX 970" host is only 1298? We know that the GTX 970 graphics card costs at least 1600 yuan, and this host with a GTX 970 graphics card has a total price of only 1298 yuan. Are you tempted? But don't panic, let's take a look at the true face of this host. The CPU uses the same promotional means as the host on the previous page, with a main frequency of 18GHz, and the rhythm of taking off. There is no brand new X58 motherboard at present, let alone an unknown brand, and the same is true for memory and solid state. The most important point is that the GTX 970 is 192 bits wide. Which version of GTX 970 is this? Some friends may have noticed that although the quality of these hosts is worrying, the price is very cheap and there is a three-year warranty. In fact, the warranty of the whole machine should be said to be something that is promised but cannot be implemented. After all, buying a machine on Taobao means going through a relatively complicated mailing process. The only warranty that is convenient for users to implement is the warranty of accessories, not the whole machine. Taobao merchants cannot provide door-to-door repair services like the big brands of brand machines. When we buy a DIY whole machine, even if there is only a hardware problem, it is quite troublesome to repair it. What's more, many merchants move from one place to another, and a store is only opened for a few months. They run away after making enough money. Three-year warranty? It's just a gimmick. In fact, the DIY hosts I cited are just the tip of the iceberg. Taobao and even Tmall are full of such hosts, which makes everyone's overall impression of DIY e-commerce whole machines very bad. It not only harms the interests of consumers, but also affects regular DIY e-commerce whole machine merchants and disrupts the entire DIY market. From the perspective of hardware manufacturers, fake and refurbished products are of poor quality and seriously affect the reputation of manufacturers. Therefore, we must resolutely resist such merchants to avoid the "bad money drives out good money" effect. Second-hand computers have no quality guarantee Some people may consider buying second-hand hardware or computers due to lack of money, but the quality of such products is often not guaranteed. For example, the following advertisement: Second-hand computer advertisements can be seen everywhere. "Due to job transfer, I can't carry my belongings. I will sell a brand desktop computer at a low price. It is equipped with CPU i7 eight-core, 8G memory, 1000G hard disk, 2G independent graphics card, and complete receipts." The content and font are almost exactly the same, and a contact number is attached. If you think this is a good thing that falls from the sky, you are wrong. From the advertising slogan, this is a typical word that steals the concept. For example, i7 eight-core does not specify which i7 processor it is. The latest i7 7700K processor is priced at about 2,300 yuan, while the older i7 960 is only 400 yuan, which is a big difference. And the i7 is a four-core eight-thread processor, not an eight-core processor as advertised. The same is true for the graphics card. It is simply stated that it has 2GB of video memory, but the model is not detailed. If it is really as the configuration in the advertisement says, it is not a loss to buy such a computer at a lower price, but in fact, this second-hand computer is more deceptive than it looks. Recently, a ZOL netizen saw a handwritten advertisement at the entrance of the elevator in the community, saying that due to job transfer, he wanted to transfer a high-configuration desktop computer at a low price. Since he had used his computer for many years, the netizen had the idea of buying this computer. After calling, a woman answered the phone and claimed that the CPU was i7 eight-core, the memory was 8G, the hard disk was 1000G, and the independent display was 2G. She offered a price of 1,500 yuan, "You can pay after seeing the goods on site." She said. After that, the computer was installed and turned on during the inspection. The computer showed that everything was normal. The woman also took the initiative to open the Master Lu software on the computer to detect the computer configuration . "I see that it is indeed a Core i7 eight-core CPU and 8G memory, and the appearance of the computer is quite new, and it looks like it has not been used for a long time. After some bargaining, the netizen bought the computer for 1,200 yuan. When the netizen started using the computer, he found that it took several minutes to boot up, and the running speed was very slow after booting up. He downloaded a software to test it and found that the computer had only 2G memory and a quad-core CPU. This is not a high-configuration computer at all, but an antique. So if you don't know much about DIY hardware, don't buy second-hand computers or hardware just for the sake of cheapness. If you must buy a second-hand computer, you must know computers well and be able to easily determine which part of the computer has a problem. Secondly, you know a lot about hardware, and can know which part of your computer has a problem, how to replace it, how to repair it, etc. Power supply quality is a weak point in DIY assembly In DIY assembly, the power supply is the most easily overlooked product, but it is the most important component to ensure the stable operation of the whole machine. However, according to the results of our recent blind test of 20 popular commercially available power supplies, the quality of the power supply is indeed worrying. In the load test of 20 popular power supplies on the market, Jindaplus and Great Wall HOPE-6000DS failed to complete the load test, and Soman SM600 blew up during the load test. In the cross-load test, the output voltage of the COUGAR ES500, Chief Player Fire Rose 500, Cooler Master Tomahawk 2 500W, and GAMEMAX Carbon Gold VP500W exceeded the Intel specification by 5%, and a total of seven products failed, with the proportion of unqualified products as high as 35%. For the detailed results of this blind test, please click: "Blind test and evaluation of 20 popular power supplies on the market". So how do you choose a power supply? Today, I have summarized the following aspects and would like to share them with you. Check the nameplate of the power supply When consumers check the nameplate, they usually look at the rated power to see if it has 80Plus. In fact, the rated power and 80Plus do not represent the quality of the product. Especially 80Plus, consumers will think that the power supply quality is reliable as soon as they see it, but this is actually a misunderstanding. 80Plus represents the conversion efficiency, which is not very related to the quality of the power supply, so I often encounter some netizens asking, my power supply has passed the 80Plus certification, but after using it for a period of time, the power supply is broken. 80Plus Certification So what are the signs that represent power supply quality certification? CCC(S) safety certification, CCC(S&E) safety and electromagnetic compatibility certification, CCC(EMC) electromagnetic compatibility certification, CCC(F) fire certification, do these certifications represent excellent quality? The answer is no, these certifications are just the standards that the power supply must meet. However, power supplies that have not passed these certifications usually represent small brands, and the quality of small brand power supplies is not guaranteed. In addition, FCC certification and UL certification represent higher standards, and power supplies that have passed these certifications are usually of higher quality. Another thing to look at is the +12V output of the power supply. A single-channel output power supply is more suitable for friends who play graphics cards, while a dual-channel output is more suitable for consumers who focus on stability. How to choose in this regard depends on the needs of consumers. Internal components of the power supply The power supply is not allowed to be opened. Once opened, the warranty is lost, which also provides convenience for some manufacturers to do some tricks. However, this does not stop us from observing the inside of the power supply. We can observe the internal electronic components through the heat dissipation holes of the power supply. So what electronic components do we generally look at through the heat dissipation holes? PFC power supply is passive PFC or active PFC, it is recommended to choose a power supply with active PFC design. In fact, passive PFC of power supply is not bad. Because passive PFC has a simple structure and is easy to make, some bad manufacturers will put some ideas on it, resulting in a decline in power supply quality. The active PFC manufacturing process is complicated, and generally there will be no counterfeit products. Finally, it is to look at the board of the power supply. The PCB board is preferably a fireproof material, because manufacturers usually design the fuse on the PCB board, which increases the risk factor of the PCB board. Another thing is to look at the power supply wire to see if it uses No. 16 or No. 18 wire, because this type of wire has a greater bearing capacity and is safer. It is best to see other components, such as whether you can see solid-state capacitors, whether the capacitors are Taiwanese or Japanese, these are also very important. Be careful of stealing when assembling offline machines Although Internet purchases are more developed now, due to the incomparable advantages of offline assembly and after-sales service, a large number of people still choose offline assembly. However, there are more traps in offline computer assembly, which makes novices avoid it. There are many reasons for this phenomenon, but I think there are two key factors, one is lax supervision, and the other is information asymmetry. The supervision level has improved a lot in recent years. In the past, the phenomenon of pulling clothes to solicit customers was everywhere, and there were even physical threats. As for information asymmetry, as consumers, what we can do is to learn as much knowledge about DIY as possible, understand the scams, familiarize ourselves with their tricks, and arm ourselves. There are so many products, it is not easy to figure them out. Generally speaking, before we go to assemble a computer, we will hold a configuration list in hand and compare the prices from three different stores to see which one is more cost-effective. For this configuration list in hand, players who don’t understand it must find a reliable friend to take a look. Once it is determined, remember! The accessories inside cannot be replaced at will, especially if the merchant recommends you to replace a certain one. You must not. The author bought a notebook that year because he believed in slander. This lesson is too profound. The author has a personal experience here, that is, this so-called "reliable friend". The friend must know everything. If it is recommended by a friend of a friend, and that friend is still buying an assembled computer in the computer city, basically you are not far from being deceived. This person may not fool his friends, but it is very likely to fool his friends' friends. The unit price and summary of this configuration list in hand should be roughly in which range. Whether it is the quotation from ZOL product library, JD.com, or Taobao, although it may not be accurate, it can also be a reference. In price negotiations, being soft-hearted is a taboo, especially under the bombardment of sales staff, it is easy to fall. Of course, due to the different channel capabilities of merchants, the final selling price may be different. If the price is much lower than what you expected, don't be greedy for small profits, because the merchants in the computer city are much smarter than ordinary people. These things are easier to say, but in fact, it is still very difficult to experience them yourself. Although the author has been in the DIY industry for many years, he dare not say that he fully understands the water in the computer city. Even if you have done enough homework before, sometimes it is unavoidable. But then again, many people have experienced a lot of bumps and bumps along the way, and they have paid a lot of IQ taxes, so in the hobby of DIY assembly, novices still have a long way to go. As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity. |
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