That is correct. E.g. a 500 Mbps subscription is configured as e.g. 540 Mbps, so that overhead will not impact a speedtest.
But with a 1Gbps connection, setting 1.1Gbps might not be possible as the modems/routers can have a 1Gbps port, so there is a “hard limit” on 1 Gbps. Because of overhead, you will typically only get around 950 Mbps on a 1 Gbps connection.
As for Fast, I have seen the same thing as OP. I can get 1.1Gbps on a 1Gbps connection that normally is “limited” to 950-isj Mbps on other speedtests. The modem internally supports more than 1 Gbps, but is limited by the Ethernet-port.
That is correct. E.g. a 500 Mbps subscription is configured as e.g. 540 Mbps, so that overhead will not impact a speedtest.
But with a 1Gbps connection, setting 1.1Gbps might not be possible as the modems/routers can have a 1Gbps port, so there is a “hard limit” on 1 Gbps. Because of overhead, you will typically only get around 950 Mbps on a 1 Gbps connection.
As for Fast, I have seen the same thing as OP. I can get 1.1Gbps on a 1Gbps connection that normally is “limited” to 950-isj Mbps on other speedtests. The modem internally supports more than 1 Gbps, but is limited by the Ethernet-port.