Are you talking about the library inquiring about the configuration of the main server or the configuration of a single computer? The main consideration of the server is stability. If you have no experience in installing server accessories, it is recommended to buy Lenovo or Dell servers. General library, the price is about 654.38+100000 yuan. If there are many computers that query online at the same time, you can expand your memory after buying it, and you need to buy server memory with ecc check memory. You can choose Kingston brand. It doesn't matter if you use a single machine for hardware configuration, mainly because the display screen is bigger, and the assembly machine configuration of 3500 yuan is enough. Or Lenovo brand machines within 4000 yuan.