Originally Posted by jeffreydeng
I have experience with 11n network using Netgear router WNR834B and PCI adapter Netgear WN311B. Both 11n device has maximum speed of 270mb/s.
The nominal speed you see in Windows has little to do with the real speed. Not only does it combine both up and down speed, but there's a lot of overhead. The real speed is around 25-35% of the nominal value you see.
Even the best 802.11n can barely do just under 100 Mbit with latency several times that of wired, and that's if you're using dual channel mode and the devices are within a few feet of and in line of sight of one another. Put a little distance or a wall in between, and the speed drops like a rock, even if Windows doesn't change the nominal speed.
That's why, for permanent networks, wireless is a poor strategy. Run the CAT 6 and be happy.