Theoretically, a 100Gbps LAN card has a theoretical transfer speed of 100Mbps, and the actual conversion limit is 12.5MB/s, while the theoretical transfer speed of a Gigabit LAN card is 125MB/s.

Theoretically, a 100Gbps LAN card has a theoretical transfer speed of 100Mbps, and the actual conversion limit is 12.5MB/s, while the theoretical transfer speed of a Gigabit LAN card is 125MB/s.

To expand this, home users can set up a Gigabit LAN with a maximum speed of 12MB/s.

This is the first time a Gigabit LAN card is used in the United States.

By limiting the PCI bandwidth, the traditional PCI interface independent Gigabit LAN card speed completely failed to reach the Gigabit LAN card should be performance, from the actual data test, the ordinary PCI Gigabit LAN card limit transfer speed in 38MB/s or so. So most of the current motherboards come with a Gigabit LAN card, are through the South Bridge chip in the PCI-E channel work, PCI-E unidirectional transmission rate is 250MB / S, bidirectional 500MB / S will no longer play a Gigabit LAN card speed constraints.

The transfer speed of the hard drive is also another major factor limiting the performance of Gigabit LAN cards. 2.5-inch notebook hard drives are 5400rpm, with a maximum actual write speed of 60MB, and even the strongest 3.5-inch desktop hard drives are now unable to guarantee a transfer speed of 90MB/s under the premise of heterogeneous disk copying. hard disk is becoming more and more popular, the constraints of the hard disk are also being eliminated.

Home networking is limited by the cost of general use of ordinary gigabit switch or router, in fact, although the ordinary switch is cheap, but both the workmanship and functionality, compared to industrial equipment or to be inferior to a lot of performance, including throughput, error frames filtering performance is not enough to carry a real gigabit network, coupled with the loss of the signal, so less than the speed of the gigabit network card, and sometimes less than the theoretical speed of 2/3.