I have 1Gb ethernet cables, but they are capped by a router that is stuck at 100Mbps. I went with this router for custom firmware options, so it has it's perked. I'm not sure if my network is even fully taking advantage of the 100mbps though to be honest, and I'm not sure how to test.
*edit* just to be clear, im not using Wifi.
My router is also "capped" by the 100Mbps restriction. But the fact is, my ISP service doesn't even provide those speeds. Usually, during downloads, it peaks at 1.6MB/sec, then levels out at 1.2 to 1.3MB/sec.
Speedtest.net is where you can check your bandwidth. But the speed that posted on the test is usually far slower than downloads in real life. The test varies with mine, ranging from 3.0Mbps to 7.0Mbps. Usually, I'm around the 6Mbps range, which is what I'm paying for. If you want to see what you have go here:
Speedtest.net - The Global Broadband Speed Test
Here's mine, faster than normal.
http://www.speedtest.net/result/1810281359.png
Perhaps I'm not calculating the download speeds right, I'm going by what my download manager says, but using different browsers, the results are the same. There is a huge gap in 1.3MB/sec & 6.0Mbps, or so it seems to be.
But I'm not complaining. When Windows 8 DP was released, by 9:40AM EST, I was on my first download, the 64 bit version, afterwards, I downloaded the 32 bit version just to have it. Downloads were completed by 11:30AM. That was around a total of 6GB of data in under 2 hours. Not bad at all, for $41.95/month (EarthLink).
I've even had fast downloads using those 54Mbps network cards. I've downloaded 700MB Linux install disks within 15 minutes with them.
Many of these advertised router specs are in theory for most users, there are 600Mbps routers on the market. But whether the user can actually peg these routers to it's advertised max is a different topic (actually would make a good discussion) altogether. There are probably some bottlenecks across the entire chain.
Cat