In recent years, with the release of NVIDIA 30 video card and the arrival of Samsung 980pro flagship, pcie4.0 technology has become the hottest and leading-edge problem in DIY circle. In fact, pcie4.0 technology is the most hot and cutting-edge problem in DIY circle. In fact, pcie4.0 technology is from AMD The introduction of x570 series motherboards has been known as the next generation. DIY hardware industry has revolutionary technology, but it didn’t expect to come so fast and fierce. How does pcie4.0 have magic power? What technology and experience revolution will it bring to the hardware industry? What are we talking about when we talk about pcie4.0? Today, let’s talk about pcie4.0. As the name implies, pcie4.0 refers to the fourth generation of PCIe bus technology. As for PCIe, its full name is PCI Express, which is essentially a high-speed serial computer extended bus standard. Similar bus standards include earlier MCA and PCI all belong to this kind of protocol. With the development of technology and the change of demand, the PCIe protocol with high speed serial, point-to-point dual channel, high bandwidth transmission and other outstanding characteristics has finally emerged, and has become the most mainstream computer bus standard. In terms of interface form, there are two kinds of PCIe, one is m.2 interface with smaller size, the other is standard PCIe slot, both of which are integrated on the main board; according to the different bandwidth capacity, as well as the iteration of technology and application level, the main line of PCIe has emerged branches and evolution. In terms of bandwidth, performance differences exist between the same level of PCIe slots based on the capacity of the PCIe serial computer. Taking the mainstream pcie3.0 as an example, it can be divided into different bandwidth such as PCIe x1/pcie x2/pcie x4/pcie x8/pcie x16. Behind these numbers, such as “x1/x2”, there are corresponding interface performance differences. As a bus protocol and standard, PCIe has undergone many years of development and transformation, from the initial PCIe 1.0, gradually developed in a large step in performance until the birth of today’s pcie4.0; “[/p > < p > the iteration of technology has brought terrible performance. According to the official data, compared with the initial generation of pcie1.0 bandwidth (x1 is 250mb/s), the latest pcie4.0 bandwidth (taking X1 as an example) has reached 2gb/s, up to 8 times. At the application level, due to the high-speed series computer of PCIe, it provides higher performance advantages. Many hardware products can and want to series through the PCIe bus to give full play to the highest performance of hardware. Among them, graphics card and solid state hard disk are representative products. As the latest version of the PCIe interface, it has three outstanding advantages: first, it is faster, the x 16 bidirectional bandwidth reaches 32gb/s, almost twice the size of PCIe 3.0; [/p > < p > it can be compatible downward, and PCIe 4.0 can be perfectly compatible with PCIe 3.0 Equipment, thus providing users with hardware transition time; [/p > < p > from the outstanding advantages of pcie4.0, we can see the arrival of pcie4.0, which can mainly provide higher bandwidth for multi hardware including video card and SSD, thus breaking the constraints of previous products on bandwidth protocol and improving the absolute performance of these hardware. In the aspect of graphics card, in the pcie3.0 era, due to the limitation of bandwidth capacity, when the dual graphics card or even multi graphics card platform is established, the complete communication bandwidth cannot be allocated to all graphics cards, which will affect the communication and display effect of the graphics card. In the pcie4.0 era, with the expansion of tolerance, the bandwidth limit of the multi graphics card platform is relieved. The large-scale multi graphics card platform becomes a large-scale multi graphics card platform In order to be possible; [/p > < p > for single video card, the innovation of pcie4.0 has increased the communication bandwidth of graphics card and CPU by twice, and theoretically has better GPU computing ability and improves the game performance under super-high picture quality. In the aspect of solid state hard disk, it is even more violent and even revolutionary. In recent years, solid state hard disk industry has developed rapidly. In terms of main controller and flash memory particles, almost all mainstream storage manufacturers have achieved annual iteration, even more than one year of technical innovation; [/p > < p > however, since the introduction of pcie3.0 in 2010, the bottleneck of the protocol has become the largest upgrading experience of solid state hard disk industry in the past ten years As early as 2018, Samsung represented storage factory has launched nvme solid state hard disk which is infinitely close to the limit performance of pcie3.0. With the birth and popularization of pcie4.0 protocol, the solid state hard disk industry has undergone revolutionary changes again. The storage performance of hard disk constantly exceeds the user’s cognition. From the maximum reading of 5000mb/s from the beginning of pcie4.0, and the 980pro read by Samsung exceeds 7000mb/s, the actual maximum performance of solid-state hard disk is put forward in less than a year (compared with the 35 in pcie3.0 Era It has been increased by more than 1 times. As for the future trend of pcie4.0, the author believes that with the continuous exploration of the ultimate performance and the extremely strong compatibility of pcie4.0, the rate will be popularized quickly, from the cutting-edge flagship technology to the user, and become the next generation of hardware standard. At the same time, based on the revolutionary iteration of pcie4.0, the computer game and other industries will also be applied and popularized rapidly. After all, the pursuit of higher performance and better experience is the common aspiration of all players and manufacturers. 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