Solid-state hard drive foundation buy: capacity: choose the appropriate capacity depends on your storage needs. If you need to store a lot of data, a high-capacity hard drive may be a better choice. In general, not less than 512GB, if you do not want frequent expansion or data demand is large, you can consider 1TB or 2TB products. Read and write speed: read and write speed is an important measure of hard disk performance. Faster read and write speed can improve the operating speed and response time of the system. In general, the faster the read speed, the faster the application will start and the file transfer will be. In reading and writing speed there are generally low-end, middle-end, high-end, ultra-high-end three grades: 1, low-end grade refers to the transmission speed of 500MB/s, this is generally SATA interface; 2. Medium-end refers to the transmission speed of about 2000 MB/s, which is basically the M. 2 interface; high-end refers to the transmission speed of more than 3000 MB/s; 3. Ultra-high-end speed can exceed 7000 MB/s of speed, of course, the price is more expensive.

Interface type: choosing the right type of hard disk for your computer will ensure maximum performance. Common interface types include SATA, PCIe, NVMe, and so on. Generally now the new motherboard are supported NVMe interface, and the hard disk price is not expensive, so it is not recommended to buy SATA. Cache type: there are two types of solid-state disk cache, one is SLC cache, mainly using TLC simulation SLC TO SPEED UP writing, when full of SLC Cache, transfer speed will show a cliff-like decline; The other is the use of DRAM chips (i. e. memory particles) as a cache of DRAM cache, the latter based on chip cost reasons, in high-end SSD more applications. The purpose of solid-state disk caching is to balance the speed difference between high-speed and low-speed devices. Caching can improve the read-write performance and stability of solid-state drives, but not the bigger the better, depending on how well the master controls match the flash particles.