The advantage of the whole machine is that it is a brand, a famous saying of CCTV advertising every day: believe in the power of the brand. In fact, people who really want to play computer are DIY. For example, 1. The memory of the CPU motherboard graphics card in the assembly machine is bought and assembled by various manufacturers. In fact, these are monopolized by various manufacturers, and the technology is not open to us at home. For example, some computer maintenance experts, if the memory in your computer is broken, can he fix it? No, you can only get a new one. So grandpa Mao's words made me feel very ordinary, and I did it myself, and I had plenty of food and clothing. You have to learn from loading the memory first, and then you can learn slowly. 2. In fact, there is no essential difference between the whole machine and the assembly. It is the same as buying from various manufacturers (CPU graphics card memory motherboard) and then assembling it at home, and then hanging a chassis of its own brand. Now you understand.