Solid state drives are currently very cheap, and domestic products with a capacity of over 1TB have dropped to over 300 yuan in price. Many users start to want to buy them when they see them as cheap, but it is important to clarify these aspects before purchasing.

Basic Selection of Solid State Drive:
Capacity: Choosing the appropriate capacity depends on your storage needs. If you need to store a large amount of data, choosing a high-capacity hard drive may be more suitable. Generally, it should not be less than 512GB. If you do not want to expand frequently or have a high data demand, you can consider 1TB or 2TB products.

Read and write speed: Read and write speed is an important indicator of hard drive performance. Faster read and write speeds can improve the system's operating speed and response time. Generally speaking, the faster the read speed, the faster the application startup and file transfer speed.

In terms of reading and writing speed, there are generally three levels: low-end, mid-end, high-end, and ultra high-end. The low-end level refers to a transmission speed of around 500MB/s, which is generally based on SATA interfaces; The mid-range refers to a transmission speed of around 2000MB/s, which is basically based on the M.2 interface; The high-end level refers to a transmission speed of over 3000MB/s. The ultra high-end speed can exceed 7000MB/s, but the price is also relatively expensive.

Interface type: Choosing a hard drive that is suitable for your computer interface type can ensure maximum performance of the hard drive. Common interface types include SATA, PCIe, and NVMe. Generally, new motherboards now support NVMe interfaces, and hard drives are not expensive, so it is not recommended to buy SATA.

Cache type: There are two types of solid-state drive cache. One is SLC cache, which mainly uses TLC to simulate SLC to accelerate write speed. When the SLC cache is filled, the transmission speed will show a cliff like decline; Another approach is to use DRAM chips (i.e. memory particles) as cache for DRAM caching, which is more commonly used on high-end SSDs due to chip cost reasons. The purpose of solid-state drive caching is to balance the speed difference between high-speed and low-speed devices. Caching can improve the read and write performance and stability of solid-state drives, but the larger the cache, the better. It also depends on the degree of matching between the main control and flash memory particles.

Brand and price: Choosing a well-known brand of hard drive and the appropriate price are other factors that need to be considered when purchasing a solid-state drive. Famous brands can usually provide higher quality and better after-sales service. Price is also an important factor that requires making reasonable choices based on your needs and budget. In general, Samsung, Magnum, Xisu, Kingston, Zhiteng, Yingruida, and Armor are relatively large brands, and are recommended first.

Why is it cheaper for domestic solid-state devices with the same capacity compared to top tier brands

As the saying goes, you get what you pay for. Although the price of solid-state drives has dropped to the freezing point, there is still a huge price difference for solid-state drives of the same capacity. The main difference here is in two points. Firstly, the speed of reading and writing, which everyone should pay attention to when choosing, usually the more expensive ones have higher reading and writing speeds. Secondly, most of the brands are original factory particles, while small factories may have leftover particles from large factories. So what are original factory particles?

Original particle refers to particles that have passed strict testing and screening by storage particle manufacturers, generally including several major brands such as Samsung, Western Data, Intel, Micron, and Toshiba. Original factory particles can be distinguished by identification, such as Samsung's QR code and SEC, Intel's lowercase letter i, Meguiar's uppercase letter M, Toshiba's TOSHIBA, and so on.

In contrast, the remaining white and black chips selected by large factories refer to particles that have not passed or have not been tested and screened by storage particle manufacturers. Their quality and performance are unstable, and they may malfunction or be damaged. So, when choosing solid-state drives, it is best to see clearly whether original factory particles are used to avoid purchasing inferior products.