Fiber internet transmits data as light impulses and delivers symmetrical speeds up to 8 Gbps with consistent performance and low latency, while cable internet transmits data as electrical signals and delivers asymmetrical speeds (1-2 Gbps downloads, 5-50 Mbps. Fiber internet transmits data as light impulses and delivers symmetrical speeds up to 8 Gbps with consistent performance and low latency, while cable internet transmits data as electrical signals and delivers asymmetrical speeds (1-2 Gbps downloads, 5-50 Mbps. The following head-to-head comparison evaluates both options based on speed, network reliability, pricing, and availability. Every home internet connection relies on a massive physical network spanning across cities and neighborhoods. The fundamental difference between cable and fiber lies in the. Deciding between fiber and cable internet? This comprehensive guide breaks down the key differences in speed, latency, reliability, and value to help you choose the right connection for your needs. We'll give clear, accessible explanations (with example scenarios) to help you decide which suits your needs best. A fiber optic cable. Right now, fiber internet has the fastest plans and symmetrical speeds, but that's probably going to change in the next several years as cable internet incorporates new technology enabling multi-gig symmetrical speeds. Plus, it's more widely available than fiber. 02 petabits per second, fiber optic technology offers performance that traditional copper systems cannot match.