A computer with an Internet connection is faster than a wifi connection. When the computer is plugged into the network cable, because it is connected through the wired way, the network is less interfered with, the data transmission speed is relatively stable, and the network speed is faster than wifi.
Although the computer is connected to wifi, you can get rid of the restrictions of the cable, you can use the computer to surf the Internet more freely, but such a wireless connection, the signal will be subject to a lot of interference, such as the microwave oven used at home, and even there is interference between different wifi signals, which leads to the instability of the wifi signal.