@李想: I was examining Intel's 12th generation Core platform recently, and found that there are a lot of upgrades, not like the "toothpaste factory" style at all. I can understand the large and small core architectures and DDR5 memory. What the first PCIe 5.0 can do, I have not found any related applications, so I hereby ask Master Titanium.
Little Lion: The biggest highlight of PCIe 5.0 is that its bandwidth has doubled on the basis of PCIe 4.0, but such a large bandwidth is still not available at all. At present, the hardware with higher requirements for PCIe channel bandwidth is graphics card and SSD. Among them, PCIe 3.0×8 can meet the operating requirements of most graphics cards. PCIe 4.0×16 bandwidth is completely surplus, and doubling it is still not enough.
SSD can be regarded as the biggest winner in the PCIe 4.0 era. The sequential read performance of the product has been increased from the previous 3500MB/s to 7000MB/s in one fell swoop, and the improvement is very obvious. If you use PCIe 5.0×4 channels, the theoretical performance can reach 14000MB/s, it is not speed to take off. On the one hand, Phison has just released its first PCIe 5.0 SSD customized master chip PS5026-E26. The chip is still in the state of taped-out design and taped-out, and is expected to start mass production in the second half of 2022. The product launch must be in 2023. On the other hand, according to the outgoing Z690 specifications, the CPU only provides 16 PCIe 5.0 channels, which must be mainly used for graphics cards, and also provides 4 PCIe 4.0 channels, mainly used for SSD . So in the short term, everyone does not need to consider using PCIe 5.0 SSD.
@悟空: Recently I am going to install a NAS system for fun, but I found that the NAS-specific mechanical hard drives are expensive. For example, Western Digital Red Disk 4TB costs more than 820 yuan, and the surveillance-grade Purple Disk 4TB As long as 579 yuan.Both hard disks pursue high stability and work 7×24 hours. Can I use surveillance-grade hard disks instead of NAS hard disks?
Little Lion: Never do this, because although NAS hard drives and surveillance-level hard drives emphasize 7×24 hours of work, they not only have performance differences, but they are also optimized for specific application environments. For surveillance-level hard disks, in order to avoid the recording information being stuck when the hard disk has bad sectors, it is designed to ignore the CRC check , that is to say, in this case, skip directly and do not try to repeat Write, after all, it is better to monitor a short frame loss or abnormal picture than a long time without recording. But this fault-tolerant mechanism is definitely a catastrophe when used on the hard disk that stores data, because as long as the data file has a small error, the entire file will be unusable. In this way, once a surveillance-grade hard disk is used on the NAS, the chance of file damage may increase. A NAS that cannot guarantee data security is meaningless. Don't make this mistake in order to save hundreds of dollars.
@黄海君: The little lion, please help me. During the holiday a few days ago, I had nothing to do, so I removed the notebook and dusted it, but after putting it back on, the CPU temperature was as high as 90℃ and the graphics card temperature was normal. , The fan also rotates at a high speed, but the wind blowing out is cold and icy. Some people say that it is because silicone grease was not applied, but I did apply it at the time. What's the matter?
Little Lion: If it is obvious that the heat generated by the CPU has not been transferred to the heat sink, Little Lion suggests that you should first check the heat sink that is in contact with the CPU to see if there are any sundries such as sand particles on it, causing the heat sink to fail to tighten. Stick the CPU; secondly, check whether the heat sink is deformed. After all, the heat sink of some models of notebooks is relatively flat and long, and only low-strength heat pipes run through the entire heat sink. This will cause heat dissipation if excessive force is used during disassembly or the heat sink hits the ground. The fin is bent or deformed, so that when it is installed again, the heat sink will not be close to the surface of the processor, causing heat to be unable to dissipate. If this happens, it is very difficult to correct,Only the entire heat sink can be replaced.
@黄彪: I like listening to music recently. The sound card of the current computer is of average quality, so I want to buy a sound card. But the audio enthusiasts around me recommend me to buy a decoder. What is the difference between a sound card and a decoder?
Little Lion: From the initial definition, the decoder is only responsible for converting digital signals into analog signals, while the sound card has the function of amplifying and processing the analog part. However, the current name has long since gotten rid of the original definition and name. The basic functions of the sound card and the decoder are the same. The difference is like a potato and a potato. Although it is one thing, the grade is obviously different. Therefore, manufacturers like to call their products a decoder.
@黄手: I blame my low hands. When I was using the laptop recently, I didn’t know what to think. I connected the power bank to the laptop’s USB port (the power bank still has 44% of the battery). Connected to the notebook USB interface, the notebook suddenly black screen, and then can no longer turn on the machine, the power indicator does not light up, what is going on, what should I do?
Little Lion: The maximum charging current of many power banks can reach about 2A, while the standard power supply current of the USB interface of a notebook is 900mA. In this way, when charging, the USB interface is in an overload state. Of course, for a notebook with a complete protection circuit, it will limit the current or cut off the load to avoid overloading the notebook. But if the protection circuit is not perfect, or the protection point is at the critical value of power supply, the high current of the USB interface may damage the internal circuit of the notebook, and even cause damage to the south bridge chip . When encountering this kind of problem, it is recommended to unplug the power bank immediately, remove the battery of the notebook, and reinstall it after a few minutes. If it is a black screen caused by the protection chip, it can be reset normally. If it still fails to boot, it means that the motherboard is damaged and needs to be repaired.
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