Upgrade your router at least every five years—or after firmware updates end or you upgrade most of your wireless devices—especially if you need all the speed you can get. Below, we discuss seven common signs that you might need a new router and explain how to choose the right kit for your needs. When Should You Upgrade Your Router? Unless it's obviously broken, replacing your router is not usually at the top of your priority list. I currently have an Arris Surfboard SBR-AC1750, which according to the specs should be able to sustain speeds up 450mbps and 1300mbps on a dual band channel. An up-to-date router is necessary for ensuring optimal network performance, security and compatibility because it supports the latest WiFi standards and can facilitate high-speed tiers.