Up to 1,000 Mbps = 1Gbps at 100m distance. That’s 1000 Mbps max for Gigabit networks
Up to 10,000 Mbps = 10Gbps at 55m distance or less. CAT 6 can handle 10G but only for shorter runs
Real world:
Home/office LAN with 1G routers/switches: 1,000 Mbps max
With 10G switch + short runs <55m: 10,000 Mbps max
Beyond 100m: Speed drops + signal loss