Wi-Fi vs. Ethernet: An Overview Ethernet is the most common type of home or office connection, and it is usually faster than wifi. But which is better for internet speed, Wi-Fi or Ethernet? Ethernet is an older method of connecting devices to the internet. It connects computers and other devices with cables. Although slower than WiFi, Ethernet can support more devices and is more reliable. WiFi is often more reliable because it sends data via radio waves rather than cables. WiFi is more versatile than Ethernet because it supports more devices. If you're not sure which connection to use, consider your needs and choose the one that works best for you.