I'm using a BR-6424n EDIMAX router that broadcasts at 300Mbps(n). My laptop is connected to my home network with its Realtek RTL8191SE, I searched the internet and found information saying it should have no problem to get up to the 300Mbps speed.
However, it only gets half of the speed(150Mbps). I've managed to connect the network and get the full speed via a USB W\L device, so the problem is not with the router but with the computer only.
This is on a Toshiba L650-10H laptop with Windows 7 premium x64