Buy a computer not by brand, but by configuration. If you only look at the brand and don't look at the configuration, you will be fooled by the manufacturer and buy a model with a lower configuration than your payment machine. What you can buy for 4000 yuan is the second generation processor of Core i5. General hard disk 500G, memory 4G, graphics card1g. You can look at the ASUS S400 series i5-2450 processor. The price/performance ratio of ASUS N series is also good. It is also good to recommend N55 N45 Lenovo's G series, which are all cost-effective routes. Suitable for the general public. For example, see A45 around 4000. The specific parameters are as follows: ASUS A45EI32 1VD-SL screen size: 14 inch 1366x768 CPU model: Intel Core i5 32 10M CPU frequency: 2.5GHz memory capacity: 4GB DDR3 1600MHz hard disk capacity: 700 MHz. : NVIDIA GeForce GT6 10 You can also look at the low price of Lenovo g480 4000. The specific parameters are as follows: screen size: 14 inch 1366x768 CPU model: Intel Core i532 10M CPU frequency: 2.5GHz memory capacity: 4GBDDR3 hard disk capacity: 500GB graphics chip: NVIDIAGeForceGT6 10M camera: integrated 3000000. The example above the camera is one of the main sales forces of Computer City in recent days. To sum up, ASUS Lenovo is good. You don't have to pursue anything. Also, when buying a notebook, you must consider the problem of dust removal in the future. If you don't dust it, you have to dust it for half a year. If you don't dust, the computer has many problems, runs slowly, is stuck, and is very hot ... Generally, domestic notebooks such as ASUS, Lenovo and Acer are easy to dust, so you can do it if you want to dust Baidu. A few screws will fix it. If you buy the kind with poor dust removal, it will cost a lot of money. It is recognized that HP's dust removal is more complicated ... everything else is average ... Needless to say, there are three packages that can be guaranteed and replaced. Because what you bought is genuine, remember to ask for a receipt. In fact, it is not recommended to buy notebooks online. The price of a physical store is the same as that on the Internet. Many people ask him how he can make money if the price in a physical store is the same as that on the Internet. You don't need to worry. The prices posted on the Internet are all combined by Lenovo, Asus, Hewlett-Packard and other big companies. Earn is not cheap, the physical store can get some money back ... this is beside the point. Some people may not know how to get some money back ... The reason why the network is cheap is that it can profit from all the tax points without storefront fees, which is a little cheaper than the physical store ... But what invoices do you need to issue to buy a computer to the physical store? After-sales service is much better than online service. Of course, this is just a personal suggestion ... it depends on the arrangement of the landlord. The most important thing is to shop around. Finally, don't buy that good one. Cost-effectiveness is the main theme of buying computers now. Unless you are rich, what I said above can be ignored. Otherwise, choose a computer. Are the children of ordinary people. It is not easy to make money. When you buy something, you get what you pay for.