1, the pursuit of compatibility and longevity: If you upgrade an old laptop, compatibility is particularly important. Because SSD has many compatibility problems. For those with good compatibility and long service life, choose Intel and Kingston.

Intel's 530 and 520 have poor performance, but the only advantage is long service life and good compatibility. Small businesses use it better, but home use is a bit slow. It is best to choose 730, which is almost an overclocked version of enterprise S3500. The main control is more than 50%, and its performance directly surpasses that of S3700, but it is much cheaper, very durable and compatible.

Kingston's V300 series is the lowest price in solid-state disks with reliable quality and long service life, which is lower than that in 300 yuan.

2, the pursuit of cost-effective: SSD takes a long time, the speed decline is generally more severe, but some main recovery mechanisms are good, so the decline is not much. The falling speed is not obvious in the market, and the following models have the best performance-to-price ratio and reputation: Puckett M6S, Sandisk Extreme Expressway Series 1 generation (the second generation is replaced by TLC, with the same speed and shorter life), Samsung 850EVO, magnesium M550 or M600, Toshiba Q300 pro. 120 or 128G, mostly within 400. Some are close to 300.

It has a shrink on it, which is cheaper. For example, the reduced version of M6S is M6V, but the main control is changed to Rong Hui, and the performance gap is not big. Flash memory or MLC, the service life is guaranteed. The reduced version of 850evo is 750evo, which has a life span of half and a writing life of only 35T, so it is necessary to minimize writing. The enhanced version of Sandisk is also controlled by Rong Hui, but MLC flash memory has a reliable life. Intel's 540, which uses Ronghui SMI SM2256 four-channel master control and TLC flash memory, looks smaller, but it is much faster than its predecessors (note that it must have a capacity of more than 240G).