Yes, you can often use your existing router with fiber optic internet, but there are crucial considerations. Understanding compatibility, potential limitations, and when an upgrade is necessary will ensure you get the most out of your high-speed connection. The transition from 100Mbps to 1000Mbps primarily occurred due to the development of fiber-optic technology, which offers much higher bandwidth and faster data transmission compared to traditional copper cables. Fiber-optic cables use light signals to transmit data at incredibly high speeds. To actually get 1200 Mbps you'll need a modem and router with 2. 5 GbE NIC in your PC, NAS, whatever. Besides, you'll probably never notice a difference between 1000 and 1200 Mbps in day to day use. If this is what you are experiencing, follow this article to get it resolved. Mark. At 100 Mbps you can stream 4K high-definition (HD) videos on several devices, download large files for work, or stream HD games on multiple laptops or smartphones in the same home. For an overview of the speeds recommended for several popular online activities, check out the graphic below. So how. While 1000mbps offers incredible benefits, it comes at a cost. On average, 1Gbps internet plans can cost anywhere from $50 to $200 per month, depending on your location and service provider.