Just brew it, I'm glad someone finally said something.
If you use a crossover cable you can only connect two devices. In your can one PC directly to the other. Then forget about Internet and the like. Picture a soup can phone, you know two soup cans and a string, can't talk to anyone else now, can you?
For those of you who say 1Gbps is not much faster then 100Mbps need to do the math. Remember it in 'bits' not bytes or kilobytes. 100Mbps breaks down to a theoretical rate of 11.9 MB per second.
or 119.2 MB per second on a gig network. Now your not going to reach that ceiling on the average desktop PC. The PC could go faster then what 100Mbps would allow.
However I use 100Mbps and I move large files around all day. I don't notice to much a difference. Now you also need to remember that if your BOTH moving files at the same time that your network is going to slow down.
Just to check try
this utility here to see what your throughput is. Might be something else going on.
"I used to think the brain was the most amazing organ in the entire body. Then I realized who was telling me this."
If ignorance were painful, half the posters here would be on morphine drips.