I am trying to connect two computers together using a Cat6 cable. Both computers have gigabit Ethernet cards, and the "Network" tab in Task Manager reports the link speed to be 1Gb/s for both. One computer is running Win7 x64, and the other is running Win8 x64. At the point of testing, both computers were disconnected from WiFi and were assigned static IP addresses 192.168.10.1 and 2.
Testing with iperf reports approximately 430Mb/s throughput, which is nowhere near the reported link speed of 1 Gb/s.
I've tried replacing the cable with a second, new, Cat6e cable, as well as a Cat5e cable, but the average throughput remains roughly (+/- 50Mb/s) the same.
I've tried going into Device Manager and changing "auto-negotiation" to "1.0 Gbps full duplex" on both computers. Not that it should make a difference, since both sides would have auto-negotiated to 1.0 Gbps anyway.
Is there something I'm missing out here?