it should only be limited by your i-net connection. Most wireless router and cards are maxed at 54mb/s (I beleive that is correct can some one confirm that?) that is very fast by most standards. If you are in the same room, or very close to the router then it should be very quick. As you get further away and the signal strength drops your speed will decrease too. Also the signal cannot go through all objects so you may get interfearance. Those things are easliy overcome though.